Home / 18,397.72-25,388.90-10,439.92

Finding the Fourth Proportional to 18,397.72, 25,388.90 and 10,439.92

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Solution

The fourth proportional to 18,397.72, 25,388.90 and 10,439.92 is: 14,407.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397.72 : 25,388.90 = 10,439.92 : x
  2. Step 2: Convert to fraction form
    18,397.72/25,388.90 = 10,439.92/x
  3. Step 3: Cross multiply
    18,397.72x = 25,388.90 × 10,439.92
  4. Step 4: Simplify right side
    18,397.72x = 265,058,084.89
  5. Step 5: Solve for x
    x = 265,058,084.89/18,397.72
  6. Step 6: Final answer
    x = 14,407.12

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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.