Home / 18,387.28-25,375.02-10,429.84

Finding the Fourth Proportional to 18,387.28, 25,375.02 and 10,429.84

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Solution

The fourth proportional to 18,387.28, 25,375.02 and 10,429.84 is: 14,393.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.28 : 25,375.02 = 10,429.84 : x
  2. Step 2: Convert to fraction form
    18,387.28/25,375.02 = 10,429.84/x
  3. Step 3: Cross multiply
    18,387.28x = 25,375.02 × 10,429.84
  4. Step 4: Simplify right side
    18,387.28x = 264,657,398.60
  5. Step 5: Solve for x
    x = 264,657,398.60/18,387.28
  6. Step 6: Final answer
    x = 14,393.50

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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.