Home / 18,435.84-25,432.56-13,391.76

Finding the Fourth Proportional to 18,435.84, 25,432.56 and 13,391.76

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Solution

The fourth proportional to 18,435.84, 25,432.56 and 13,391.76 is: 18,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,435.84 : 25,432.56 = 13,391.76 : x
  2. Step 2: Convert to fraction form
    18,435.84/25,432.56 = 13,391.76/x
  3. Step 3: Cross multiply
    18,435.84x = 25,432.56 × 13,391.76
  4. Step 4: Simplify right side
    18,435.84x = 340,586,739.71
  5. Step 5: Solve for x
    x = 340,586,739.71/18,435.84
  6. Step 6: Final answer
    x = 18,474.16

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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.