Home / 20,293.50-30,428.10-8,432.97

Finding the Fourth Proportional to 20,293.50, 30,428.10 and 8,432.97

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Solution

The fourth proportional to 20,293.50, 30,428.10 and 8,432.97 is: 12,644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.50 : 30,428.10 = 8,432.97 : x
  2. Step 2: Convert to fraction form
    20,293.50/30,428.10 = 8,432.97/x
  3. Step 3: Cross multiply
    20,293.50x = 30,428.10 × 8,432.97
  4. Step 4: Simplify right side
    20,293.50x = 256,599,254.46
  5. Step 5: Solve for x
    x = 256,599,254.46/20,293.50
  6. Step 6: Final answer
    x = 12,644.41

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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.