Home / 20,473.43-28,253-11,520.93

Finding the Fourth Proportional to 20,473.43, 28,253 and 11,520.93

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Solution

The fourth proportional to 20,473.43, 28,253 and 11,520.93 is: 15,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.43 : 28,253 = 11,520.93 : x
  2. Step 2: Convert to fraction form
    20,473.43/28,253 = 11,520.93/x
  3. Step 3: Cross multiply
    20,473.43x = 28,253 × 11,520.93
  4. Step 4: Simplify right side
    20,473.43x = 325,500,835.29
  5. Step 5: Solve for x
    x = 325,500,835.29/20,473.43
  6. Step 6: Final answer
    x = 15,898.70

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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.