Home / 19,939.60-29,910.24-7,458.40

Finding the Fourth Proportional to 19,939.60, 29,910.24 and 7,458.40

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Solution

The fourth proportional to 19,939.60, 29,910.24 and 7,458.40 is: 11,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.60 : 29,910.24 = 7,458.40 : x
  2. Step 2: Convert to fraction form
    19,939.60/29,910.24 = 7,458.40/x
  3. Step 3: Cross multiply
    19,939.60x = 29,910.24 × 7,458.40
  4. Step 4: Simplify right side
    19,939.60x = 223,082,534.02
  5. Step 5: Solve for x
    x = 223,082,534.02/19,939.60
  6. Step 6: Final answer
    x = 11,187.91

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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.