Home / 20,535.12-28,337.76-11,582.88

Finding the Fourth Proportional to 20,535.12, 28,337.76 and 11,582.88

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Solution

The fourth proportional to 20,535.12, 28,337.76 and 11,582.88 is: 15,983.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.12 : 28,337.76 = 11,582.88 : x
  2. Step 2: Convert to fraction form
    20,535.12/28,337.76 = 11,582.88/x
  3. Step 3: Cross multiply
    20,535.12x = 28,337.76 × 11,582.88
  4. Step 4: Simplify right side
    20,535.12x = 328,232,873.55
  5. Step 5: Solve for x
    x = 328,232,873.55/20,535.12
  6. Step 6: Final answer
    x = 15,983.98

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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.