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Finding the Fourth Proportional to 18,124.68, 25,017.20 and 10,953.39

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Solution

The fourth proportional to 18,124.68, 25,017.20 and 10,953.39 is: 15,118.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,124.68 : 25,017.20 = 10,953.39 : x
  2. Step 2: Convert to fraction form
    18,124.68/25,017.20 = 10,953.39/x
  3. Step 3: Cross multiply
    18,124.68x = 25,017.20 × 10,953.39
  4. Step 4: Simplify right side
    18,124.68x = 274,022,968.46
  5. Step 5: Solve for x
    x = 274,022,968.46/18,124.68
  6. Step 6: Final answer
    x = 15,118.78

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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.