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Finding the Fourth Proportional to 18,128, 25,014.48 and 10,575.92

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Solution

The fourth proportional to 18,128, 25,014.48 and 10,575.92 is: 14,593.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128 : 25,014.48 = 10,575.92 : x
  2. Step 2: Convert to fraction form
    18,128/25,014.48 = 10,575.92/x
  3. Step 3: Cross multiply
    18,128x = 25,014.48 × 10,575.92
  4. Step 4: Simplify right side
    18,128x = 264,551,139.32
  5. Step 5: Solve for x
    x = 264,551,139.32/18,128
  6. Step 6: Final answer
    x = 14,593.51

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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.