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Finding the Fourth Proportional to 18,306.08, 25,240 and 15,468.40

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Solution

The fourth proportional to 18,306.08, 25,240 and 15,468.40 is: 21,327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.08 : 25,240 = 15,468.40 : x
  2. Step 2: Convert to fraction form
    18,306.08/25,240 = 15,468.40/x
  3. Step 3: Cross multiply
    18,306.08x = 25,240 × 15,468.40
  4. Step 4: Simplify right side
    18,306.08x = 390,422,416
  5. Step 5: Solve for x
    x = 390,422,416/18,306.08
  6. Step 6: Final answer
    x = 21,327.47

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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.