Home / 18,409.95-25,397.04-12,443.70

Finding the Fourth Proportional to 18,409.95, 25,397.04 and 12,443.70

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Solution

The fourth proportional to 18,409.95, 25,397.04 and 12,443.70 is: 17,166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.95 : 25,397.04 = 12,443.70 : x
  2. Step 2: Convert to fraction form
    18,409.95/25,397.04 = 12,443.70/x
  3. Step 3: Cross multiply
    18,409.95x = 25,397.04 × 12,443.70
  4. Step 4: Simplify right side
    18,409.95x = 316,033,146.65
  5. Step 5: Solve for x
    x = 316,033,146.65/18,409.95
  6. Step 6: Final answer
    x = 17,166.43

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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.