Home / 25,427.52-38,128.98-8,781.72

Finding the Fourth Proportional to 25,427.52, 38,128.98 and 8,781.72

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Solution

The fourth proportional to 25,427.52, 38,128.98 and 8,781.72 is: 13,168.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,427.52 : 38,128.98 = 8,781.72 : x
  2. Step 2: Convert to fraction form
    25,427.52/38,128.98 = 8,781.72/x
  3. Step 3: Cross multiply
    25,427.52x = 38,128.98 × 8,781.72
  4. Step 4: Simplify right side
    25,427.52x = 334,837,866.80
  5. Step 5: Solve for x
    x = 334,837,866.80/25,427.52
  6. Step 6: Final answer
    x = 13,168.33

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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.