Home / 20,837.39-31,261.55-8,355.15

Finding the Fourth Proportional to 20,837.39, 31,261.55 and 8,355.15

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Solution

The fourth proportional to 20,837.39, 31,261.55 and 8,355.15 is: 12,534.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.39 : 31,261.55 = 8,355.15 : x
  2. Step 2: Convert to fraction form
    20,837.39/31,261.55 = 8,355.15/x
  3. Step 3: Cross multiply
    20,837.39x = 31,261.55 × 8,355.15
  4. Step 4: Simplify right side
    20,837.39x = 261,194,897.71
  5. Step 5: Solve for x
    x = 261,194,897.71/20,837.39
  6. Step 6: Final answer
    x = 12,534.92

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1.5x scale

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.