Home / 20,894,111.72-28,833,874.10-11,726,754.47

Finding the Fourth Proportional to 20,894,111.72, 28,833,874.10 and 11,726,754.47

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Solution

The fourth proportional to 20,894,111.72, 28,833,874.10 and 11,726,754.47 is: 16,182,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894,111.72 : 28,833,874.10 = 11,726,754.47 : x
  2. Step 2: Convert to fraction form
    20,894,111.72/28,833,874.10 = 11,726,754.47/x
  3. Step 3: Cross multiply
    20,894,111.72x = 28,833,874.10 × 11,726,754.47
  4. Step 4: Simplify right side
    20,894,111.72x = 338,127,761,786,789.06
  5. Step 5: Solve for x
    x = 338,127,761,786,789.06/20,894,111.72
  6. Step 6: Final answer
    x = 16,182,921.12

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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.