Home / 28,384.60-42,601.20-12,613.90

Finding the Fourth Proportional to 28,384.60, 42,601.20 and 12,613.90

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Solution

The fourth proportional to 28,384.60, 42,601.20 and 12,613.90 is: 18,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.60 : 42,601.20 = 12,613.90 : x
  2. Step 2: Convert to fraction form
    28,384.60/42,601.20 = 12,613.90/x
  3. Step 3: Cross multiply
    28,384.60x = 42,601.20 × 12,613.90
  4. Step 4: Simplify right side
    28,384.60x = 537,367,276.68
  5. Step 5: Solve for x
    x = 537,367,276.68/28,384.60
  6. Step 6: Final answer
    x = 18,931.65

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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.