Home / 20,400,151.32-28,152,828.18-11,233,122.12

Finding the Fourth Proportional to 20,400,151.32, 28,152,828.18 and 11,233,122.12

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Solution

The fourth proportional to 20,400,151.32, 28,152,828.18 and 11,233,122.12 is: 15,502,049.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400,151.32 : 28,152,828.18 = 11,233,122.12 : x
  2. Step 2: Convert to fraction form
    20,400,151.32/28,152,828.18 = 11,233,122.12/x
  3. Step 3: Cross multiply
    20,400,151.32x = 28,152,828.18 × 11,233,122.12
  4. Step 4: Simplify right side
    20,400,151.32x = 316,244,156,969,317.31
  5. Step 5: Solve for x
    x = 316,244,156,969,317.31/20,400,151.32
  6. Step 6: Final answer
    x = 15,502,049.57

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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.