Home / 15,387.52-23,078.40-4,294.72

Finding the Fourth Proportional to 15,387.52, 23,078.40 and 4,294.72

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Solution

The fourth proportional to 15,387.52, 23,078.40 and 4,294.72 is: 6,441.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.52 : 23,078.40 = 4,294.72 : x
  2. Step 2: Convert to fraction form
    15,387.52/23,078.40 = 4,294.72/x
  3. Step 3: Cross multiply
    15,387.52x = 23,078.40 × 4,294.72
  4. Step 4: Simplify right side
    15,387.52x = 99,115,266.05
  5. Step 5: Solve for x
    x = 99,115,266.05/15,387.52
  6. Step 6: Final answer
    x = 6,441.28

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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.