Home / 20,289.77-30,432.49-9,613.55

Finding the Fourth Proportional to 20,289.77, 30,432.49 and 9,613.55

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Solution

The fourth proportional to 20,289.77, 30,432.49 and 9,613.55 is: 14,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.77 : 30,432.49 = 9,613.55 : x
  2. Step 2: Convert to fraction form
    20,289.77/30,432.49 = 9,613.55/x
  3. Step 3: Cross multiply
    20,289.77x = 30,432.49 × 9,613.55
  4. Step 4: Simplify right side
    20,289.77x = 292,564,088.04
  5. Step 5: Solve for x
    x = 292,564,088.04/20,289.77
  6. Step 6: Final answer
    x = 14,419.29

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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.