Home / 18,403.74-25,387.02-12,443.76

Finding the Fourth Proportional to 18,403.74, 25,387.02 and 12,443.76

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Solution

The fourth proportional to 18,403.74, 25,387.02 and 12,443.76 is: 17,165.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.74 : 25,387.02 = 12,443.76 : x
  2. Step 2: Convert to fraction form
    18,403.74/25,387.02 = 12,443.76/x
  3. Step 3: Cross multiply
    18,403.74x = 25,387.02 × 12,443.76
  4. Step 4: Simplify right side
    18,403.74x = 315,909,984.00
  5. Step 5: Solve for x
    x = 315,909,984.00/18,403.74
  6. Step 6: Final answer
    x = 17,165.53

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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.