Home / 20,701.50-28,575.27-12,317.82

Finding the Fourth Proportional to 20,701.50, 28,575.27 and 12,317.82

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Solution

The fourth proportional to 20,701.50, 28,575.27 and 12,317.82 is: 17,002.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.50 : 28,575.27 = 12,317.82 : x
  2. Step 2: Convert to fraction form
    20,701.50/28,575.27 = 12,317.82/x
  3. Step 3: Cross multiply
    20,701.50x = 28,575.27 × 12,317.82
  4. Step 4: Simplify right side
    20,701.50x = 351,985,032.31
  5. Step 5: Solve for x
    x = 351,985,032.31/20,701.50
  6. Step 6: Final answer
    x = 17,002.88

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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.