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Finding the Fourth Proportional to 8,805,809.70, 13,208,714.55 and 8,021,988.90

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Solution

The fourth proportional to 8,805,809.70, 13,208,714.55 and 8,021,988.90 is: 12,032,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805,809.70 : 13,208,714.55 = 8,021,988.90 : x
  2. Step 2: Convert to fraction form
    8,805,809.70/13,208,714.55 = 8,021,988.90/x
  3. Step 3: Cross multiply
    8,805,809.70x = 13,208,714.55 × 8,021,988.90
  4. Step 4: Simplify right side
    8,805,809.70x = 105,960,161,503,368.50
  5. Step 5: Solve for x
    x = 105,960,161,503,368.50/8,805,809.70
  6. Step 6: Final answer
    x = 12,032,983.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.