Home / 15,909.81-23,863.50-5,380.71

Finding the Fourth Proportional to 15,909.81, 23,863.50 and 5,380.71

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Solution

The fourth proportional to 15,909.81, 23,863.50 and 5,380.71 is: 8,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.81 : 23,863.50 = 5,380.71 : x
  2. Step 2: Convert to fraction form
    15,909.81/23,863.50 = 5,380.71/x
  3. Step 3: Cross multiply
    15,909.81x = 23,863.50 × 5,380.71
  4. Step 4: Simplify right side
    15,909.81x = 128,402,573.09
  5. Step 5: Solve for x
    x = 128,402,573.09/15,909.81
  6. Step 6: Final answer
    x = 8,070.65

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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.