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Finding the Fourth Proportional to 18,129, 25,018.08 and 10,580.52

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Solution

The fourth proportional to 18,129, 25,018.08 and 10,580.52 is: 14,601.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129 : 25,018.08 = 10,580.52 : x
  2. Step 2: Convert to fraction form
    18,129/25,018.08 = 10,580.52/x
  3. Step 3: Cross multiply
    18,129x = 25,018.08 × 10,580.52
  4. Step 4: Simplify right side
    18,129x = 264,704,295.80
  5. Step 5: Solve for x
    x = 264,704,295.80/18,129
  6. Step 6: Final answer
    x = 14,601.15

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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.