Home / 21,059.27-31,587.76-12,737.06

Finding the Fourth Proportional to 21,059.27, 31,587.76 and 12,737.06

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Solution

The fourth proportional to 21,059.27, 31,587.76 and 12,737.06 is: 19,104.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.27 : 31,587.76 = 12,737.06 : x
  2. Step 2: Convert to fraction form
    21,059.27/31,587.76 = 12,737.06/x
  3. Step 3: Cross multiply
    21,059.27x = 31,587.76 × 12,737.06
  4. Step 4: Simplify right side
    21,059.27x = 402,335,130.70
  5. Step 5: Solve for x
    x = 402,335,130.70/21,059.27
  6. Step 6: Final answer
    x = 19,104.89

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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.