Home / 18,418.23-25,397.03-12,439.53

Finding the Fourth Proportional to 18,418.23, 25,397.03 and 12,439.53

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Solution

The fourth proportional to 18,418.23, 25,397.03 and 12,439.53 is: 17,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.23 : 25,397.03 = 12,439.53 : x
  2. Step 2: Convert to fraction form
    18,418.23/25,397.03 = 12,439.53/x
  3. Step 3: Cross multiply
    18,418.23x = 25,397.03 × 12,439.53
  4. Step 4: Simplify right side
    18,418.23x = 315,927,054.40
  5. Step 5: Solve for x
    x = 315,927,054.40/18,418.23
  6. Step 6: Final answer
    x = 17,152.95

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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.