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Finding the Fourth Proportional to 15,033,187.20, 20,745,575.10 and 8,838,929.28

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Solution

The fourth proportional to 15,033,187.20, 20,745,575.10 and 8,838,929.28 is: 12,197,591.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,033,187.20 : 20,745,575.10 = 8,838,929.28 : x
  2. Step 2: Convert to fraction form
    15,033,187.20/20,745,575.10 = 8,838,929.28/x
  3. Step 3: Cross multiply
    15,033,187.20x = 20,745,575.10 × 8,838,929.28
  4. Step 4: Simplify right side
    15,033,187.20x = 183,368,671,181,828.94
  5. Step 5: Solve for x
    x = 183,368,671,181,828.94/15,033,187.20
  6. Step 6: Final answer
    x = 12,197,591.15

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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.