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Finding the Fourth Proportional to 11,802.90, 16,279.44 and 8,019.45

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Solution

The fourth proportional to 11,802.90, 16,279.44 and 8,019.45 is: 11,061.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,802.90 : 16,279.44 = 8,019.45 : x
  2. Step 2: Convert to fraction form
    11,802.90/16,279.44 = 8,019.45/x
  3. Step 3: Cross multiply
    11,802.90x = 16,279.44 × 8,019.45
  4. Step 4: Simplify right side
    11,802.90x = 130,552,155.11
  5. Step 5: Solve for x
    x = 130,552,155.11/11,802.90
  6. Step 6: Final answer
    x = 11,061.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.