Home / 20,318.26-28,039.08-11,366.74

Finding the Fourth Proportional to 20,318.26, 28,039.08 and 11,366.74

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Solution

The fourth proportional to 20,318.26, 28,039.08 and 11,366.74 is: 15,686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.26 : 28,039.08 = 11,366.74 : x
  2. Step 2: Convert to fraction form
    20,318.26/28,039.08 = 11,366.74/x
  3. Step 3: Cross multiply
    20,318.26x = 28,039.08 × 11,366.74
  4. Step 4: Simplify right side
    20,318.26x = 318,712,932.20
  5. Step 5: Solve for x
    x = 318,712,932.20/20,318.26
  6. Step 6: Final answer
    x = 15,686.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.