Home / 20,788.88-31,184.40-10,397.12

Finding the Fourth Proportional to 20,788.88, 31,184.40 and 10,397.12

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Solution

The fourth proportional to 20,788.88, 31,184.40 and 10,397.12 is: 15,596.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.88 : 31,184.40 = 10,397.12 : x
  2. Step 2: Convert to fraction form
    20,788.88/31,184.40 = 10,397.12/x
  3. Step 3: Cross multiply
    20,788.88x = 31,184.40 × 10,397.12
  4. Step 4: Simplify right side
    20,788.88x = 324,227,948.93
  5. Step 5: Solve for x
    x = 324,227,948.93/20,788.88
  6. Step 6: Final answer
    x = 15,596.22

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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.