Home / 15,222.50-21,007.85-9,253.20

Finding the Fourth Proportional to 15,222.50, 21,007.85 and 9,253.20

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Solution

The fourth proportional to 15,222.50, 21,007.85 and 9,253.20 is: 12,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.50 : 21,007.85 = 9,253.20 : x
  2. Step 2: Convert to fraction form
    15,222.50/21,007.85 = 9,253.20/x
  3. Step 3: Cross multiply
    15,222.50x = 21,007.85 × 9,253.20
  4. Step 4: Simplify right side
    15,222.50x = 194,389,837.62
  5. Step 5: Solve for x
    x = 194,389,837.62/15,222.50
  6. Step 6: Final answer
    x = 12,769.90

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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.