Home / 21,059.55-31,588.11-12,737.31

Finding the Fourth Proportional to 21,059.55, 31,588.11 and 12,737.31

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Solution

The fourth proportional to 21,059.55, 31,588.11 and 12,737.31 is: 19,105.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.55 : 31,588.11 = 12,737.31 : x
  2. Step 2: Convert to fraction form
    21,059.55/31,588.11 = 12,737.31/x
  3. Step 3: Cross multiply
    21,059.55x = 31,588.11 × 12,737.31
  4. Step 4: Simplify right side
    21,059.55x = 402,347,549.38
  5. Step 5: Solve for x
    x = 402,347,549.38/21,059.55
  6. Step 6: Final answer
    x = 19,105.23

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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.