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Finding the Fourth Proportional to 18,345.60, 25,280.60 and 13,025.52

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Solution

The fourth proportional to 18,345.60, 25,280.60 and 13,025.52 is: 17,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.60 : 25,280.60 = 13,025.52 : x
  2. Step 2: Convert to fraction form
    18,345.60/25,280.60 = 13,025.52/x
  3. Step 3: Cross multiply
    18,345.60x = 25,280.60 × 13,025.52
  4. Step 4: Simplify right side
    18,345.60x = 329,292,895.78
  5. Step 5: Solve for x
    x = 329,292,895.78/18,345.60
  6. Step 6: Final answer
    x = 17,949.42

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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.