Home / 20,294.40-30,425.67-12,897.48

Finding the Fourth Proportional to 20,294.40, 30,425.67 and 12,897.48

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Solution

The fourth proportional to 20,294.40, 30,425.67 and 12,897.48 is: 19,336.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.40 : 30,425.67 = 12,897.48 : x
  2. Step 2: Convert to fraction form
    20,294.40/30,425.67 = 12,897.48/x
  3. Step 3: Cross multiply
    20,294.40x = 30,425.67 × 12,897.48
  4. Step 4: Simplify right side
    20,294.40x = 392,414,470.31
  5. Step 5: Solve for x
    x = 392,414,470.31/20,294.40
  6. Step 6: Final answer
    x = 19,336.10

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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.