Home / 13,724.02-18,939.17-7,436.40

Finding the Fourth Proportional to 13,724.02, 18,939.17 and 7,436.40

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Solution

The fourth proportional to 13,724.02, 18,939.17 and 7,436.40 is: 10,262.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.02 : 18,939.17 = 7,436.40 : x
  2. Step 2: Convert to fraction form
    13,724.02/18,939.17 = 7,436.40/x
  3. Step 3: Cross multiply
    13,724.02x = 18,939.17 × 7,436.40
  4. Step 4: Simplify right side
    13,724.02x = 140,839,243.79
  5. Step 5: Solve for x
    x = 140,839,243.79/13,724.02
  6. Step 6: Final answer
    x = 10,262.24

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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.