Home / 20,655.03-28,503.18-11,223.39

Finding the Fourth Proportional to 20,655.03, 28,503.18 and 11,223.39

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Solution

The fourth proportional to 20,655.03, 28,503.18 and 11,223.39 is: 15,487.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.03 : 28,503.18 = 11,223.39 : x
  2. Step 2: Convert to fraction form
    20,655.03/28,503.18 = 11,223.39/x
  3. Step 3: Cross multiply
    20,655.03x = 28,503.18 × 11,223.39
  4. Step 4: Simplify right side
    20,655.03x = 319,902,305.38
  5. Step 5: Solve for x
    x = 319,902,305.38/20,655.03
  6. Step 6: Final answer
    x = 15,487.86

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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.