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Finding the Fourth Proportional to 18,264.60, 25,205.20 and 9,881.10

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Solution

The fourth proportional to 18,264.60, 25,205.20 and 9,881.10 is: 13,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,264.60 : 25,205.20 = 9,881.10 : x
  2. Step 2: Convert to fraction form
    18,264.60/25,205.20 = 9,881.10/x
  3. Step 3: Cross multiply
    18,264.60x = 25,205.20 × 9,881.10
  4. Step 4: Simplify right side
    18,264.60x = 249,055,101.72
  5. Step 5: Solve for x
    x = 249,055,101.72/18,264.60
  6. Step 6: Final answer
    x = 13,635.95

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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.