Home / 20,720,463.09-31,102,251.75-15,261,721.35

Finding the Fourth Proportional to 20,720,463.09, 31,102,251.75 and 15,261,721.35

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Solution

The fourth proportional to 20,720,463.09, 31,102,251.75 and 15,261,721.35 is: 22,908,459.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720,463.09 : 31,102,251.75 = 15,261,721.35 : x
  2. Step 2: Convert to fraction form
    20,720,463.09/31,102,251.75 = 15,261,721.35/x
  3. Step 3: Cross multiply
    20,720,463.09x = 31,102,251.75 × 15,261,721.35
  4. Step 4: Simplify right side
    20,720,463.09x = 474,673,899,566,049.88
  5. Step 5: Solve for x
    x = 474,673,899,566,049.88/20,720,463.09
  6. Step 6: Final answer
    x = 22,908,459.98

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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.