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Finding the Fourth Proportional to 12,480,929.20, 18,693,400.20 and 10,241,441.20

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Solution

The fourth proportional to 12,480,929.20, 18,693,400.20 and 10,241,441.20 is: 15,339,191.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,929.20 : 18,693,400.20 = 10,241,441.20 : x
  2. Step 2: Convert to fraction form
    12,480,929.20/18,693,400.20 = 10,241,441.20/x
  3. Step 3: Cross multiply
    12,480,929.20x = 18,693,400.20 × 10,241,441.20
  4. Step 4: Simplify right side
    12,480,929.20x = 191,447,358,976,368.22
  5. Step 5: Solve for x
    x = 191,447,358,976,368.22/12,480,929.20
  6. Step 6: Final answer
    x = 15,339,191.17

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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.