Home / 17,939.40-24,758.64-9,985.20

Finding the Fourth Proportional to 17,939.40, 24,758.64 and 9,985.20

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Solution

The fourth proportional to 17,939.40, 24,758.64 and 9,985.20 is: 13,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,939.40 : 24,758.64 = 9,985.20 : x
  2. Step 2: Convert to fraction form
    17,939.40/24,758.64 = 9,985.20/x
  3. Step 3: Cross multiply
    17,939.40x = 24,758.64 × 9,985.20
  4. Step 4: Simplify right side
    17,939.40x = 247,219,972.13
  5. Step 5: Solve for x
    x = 247,219,972.13/17,939.40
  6. Step 6: Final answer
    x = 13,780.84

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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.