Home / 15,200.24-20,959.80-9,885.20

Finding the Fourth Proportional to 15,200.24, 20,959.80 and 9,885.20

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Solution

The fourth proportional to 15,200.24, 20,959.80 and 9,885.20 is: 13,630.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.24 : 20,959.80 = 9,885.20 : x
  2. Step 2: Convert to fraction form
    15,200.24/20,959.80 = 9,885.20/x
  3. Step 3: Cross multiply
    15,200.24x = 20,959.80 × 9,885.20
  4. Step 4: Simplify right side
    15,200.24x = 207,191,814.96
  5. Step 5: Solve for x
    x = 207,191,814.96/15,200.24
  6. Step 6: Final answer
    x = 13,630.83

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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.