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Finding the Fourth Proportional to 14,005.70, 21,008.55 and 8,476.10

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Solution

The fourth proportional to 14,005.70, 21,008.55 and 8,476.10 is: 12,714.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,005.70 : 21,008.55 = 8,476.10 : x
  2. Step 2: Convert to fraction form
    14,005.70/21,008.55 = 8,476.10/x
  3. Step 3: Cross multiply
    14,005.70x = 21,008.55 × 8,476.10
  4. Step 4: Simplify right side
    14,005.70x = 178,070,570.66
  5. Step 5: Solve for x
    x = 178,070,570.66/14,005.70
  6. Step 6: Final answer
    x = 12,714.15

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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.