Home / 15,312,490.38-21,131,715.25-8,787,313.46

Finding the Fourth Proportional to 15,312,490.38, 21,131,715.25 and 8,787,313.46

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Solution

The fourth proportional to 15,312,490.38, 21,131,715.25 and 8,787,313.46 is: 12,126,767.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312,490.38 : 21,131,715.25 = 8,787,313.46 : x
  2. Step 2: Convert to fraction form
    15,312,490.38/21,131,715.25 = 8,787,313.46/x
  3. Step 3: Cross multiply
    15,312,490.38x = 21,131,715.25 × 8,787,313.46
  4. Step 4: Simplify right side
    15,312,490.38x = 185,691,005,849,212.28
  5. Step 5: Solve for x
    x = 185,691,005,849,212.28/15,312,490.38
  6. Step 6: Final answer
    x = 12,126,767.18

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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.