Home / 18,374.10-25,356.28-9,990.60

Finding the Fourth Proportional to 18,374.10, 25,356.28 and 9,990.60

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Solution

The fourth proportional to 18,374.10, 25,356.28 and 9,990.60 is: 13,787.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.10 : 25,356.28 = 9,990.60 : x
  2. Step 2: Convert to fraction form
    18,374.10/25,356.28 = 9,990.60/x
  3. Step 3: Cross multiply
    18,374.10x = 25,356.28 × 9,990.60
  4. Step 4: Simplify right side
    18,374.10x = 253,324,450.97
  5. Step 5: Solve for x
    x = 253,324,450.97/18,374.10
  6. Step 6: Final answer
    x = 13,787.04

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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.