Home / 18,353.70-25,319.43-12,387.30

Finding the Fourth Proportional to 18,353.70, 25,319.43 and 12,387.30

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Solution

The fourth proportional to 18,353.70, 25,319.43 and 12,387.30 is: 17,088.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.70 : 25,319.43 = 12,387.30 : x
  2. Step 2: Convert to fraction form
    18,353.70/25,319.43 = 12,387.30/x
  3. Step 3: Cross multiply
    18,353.70x = 25,319.43 × 12,387.30
  4. Step 4: Simplify right side
    18,353.70x = 313,639,375.24
  5. Step 5: Solve for x
    x = 313,639,375.24/18,353.70
  6. Step 6: Final answer
    x = 17,088.62

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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.