Home / 12,239.64-18,278.19-9,902.52

Finding the Fourth Proportional to 12,239.64, 18,278.19 and 9,902.52

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Solution

The fourth proportional to 12,239.64, 18,278.19 and 9,902.52 is: 14,788.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.64 : 18,278.19 = 9,902.52 : x
  2. Step 2: Convert to fraction form
    12,239.64/18,278.19 = 9,902.52/x
  3. Step 3: Cross multiply
    12,239.64x = 18,278.19 × 9,902.52
  4. Step 4: Simplify right side
    12,239.64x = 181,000,142.04
  5. Step 5: Solve for x
    x = 181,000,142.04/12,239.64
  6. Step 6: Final answer
    x = 14,788.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.