Home / 20,332.48-28,058.90-11,381.44

Finding the Fourth Proportional to 20,332.48, 28,058.90 and 11,381.44

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Solution

The fourth proportional to 20,332.48, 28,058.90 and 11,381.44 is: 15,706.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.48 : 28,058.90 = 11,381.44 : x
  2. Step 2: Convert to fraction form
    20,332.48/28,058.90 = 11,381.44/x
  3. Step 3: Cross multiply
    20,332.48x = 28,058.90 × 11,381.44
  4. Step 4: Simplify right side
    20,332.48x = 319,350,686.82
  5. Step 5: Solve for x
    x = 319,350,686.82/20,332.48
  6. Step 6: Final answer
    x = 15,706.43

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1.5x scale

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.