Home / 28,458.96-39,265.50-18,387.84

Finding the Fourth Proportional to 28,458.96, 39,265.50 and 18,387.84

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Solution

The fourth proportional to 28,458.96, 39,265.50 and 18,387.84 is: 25,370.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.96 : 39,265.50 = 18,387.84 : x
  2. Step 2: Convert to fraction form
    28,458.96/39,265.50 = 18,387.84/x
  3. Step 3: Cross multiply
    28,458.96x = 39,265.50 × 18,387.84
  4. Step 4: Simplify right side
    28,458.96x = 722,007,731.52
  5. Step 5: Solve for x
    x = 722,007,731.52/28,458.96
  6. Step 6: Final answer
    x = 25,370.14

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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.