Home / 25,419.64-38,134.56-8,780.28

Finding the Fourth Proportional to 25,419.64, 38,134.56 and 8,780.28

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Solution

The fourth proportional to 25,419.64, 38,134.56 and 8,780.28 is: 13,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,419.64 : 38,134.56 = 8,780.28 : x
  2. Step 2: Convert to fraction form
    25,419.64/38,134.56 = 8,780.28/x
  3. Step 3: Cross multiply
    25,419.64x = 38,134.56 × 8,780.28
  4. Step 4: Simplify right side
    25,419.64x = 334,832,114.48
  5. Step 5: Solve for x
    x = 334,832,114.48/25,419.64
  6. Step 6: Final answer
    x = 13,172.18

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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.