Home / 25,419.52-38,097.12-12,920.80

Finding the Fourth Proportional to 25,419.52, 38,097.12 and 12,920.80

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Solution

The fourth proportional to 25,419.52, 38,097.12 and 12,920.80 is: 19,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,419.52 : 38,097.12 = 12,920.80 : x
  2. Step 2: Convert to fraction form
    25,419.52/38,097.12 = 12,920.80/x
  3. Step 3: Cross multiply
    25,419.52x = 38,097.12 × 12,920.80
  4. Step 4: Simplify right side
    25,419.52x = 492,245,268.10
  5. Step 5: Solve for x
    x = 492,245,268.10/25,419.52
  6. Step 6: Final answer
    x = 19,364.85

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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.