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Finding the Fourth Proportional to 18,151.52, 25,058.64 and 12,214.40

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Solution

The fourth proportional to 18,151.52, 25,058.64 and 12,214.40 is: 16,862.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151.52 : 25,058.64 = 12,214.40 : x
  2. Step 2: Convert to fraction form
    18,151.52/25,058.64 = 12,214.40/x
  3. Step 3: Cross multiply
    18,151.52x = 25,058.64 × 12,214.40
  4. Step 4: Simplify right side
    18,151.52x = 306,076,252.42
  5. Step 5: Solve for x
    x = 306,076,252.42/18,151.52
  6. Step 6: Final answer
    x = 16,862.29

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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.