Home / 18,707.49-25,819.68-11,154.30

Finding the Fourth Proportional to 18,707.49, 25,819.68 and 11,154.30

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Solution

The fourth proportional to 18,707.49, 25,819.68 and 11,154.30 is: 15,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.49 : 25,819.68 = 11,154.30 : x
  2. Step 2: Convert to fraction form
    18,707.49/25,819.68 = 11,154.30/x
  3. Step 3: Cross multiply
    18,707.49x = 25,819.68 × 11,154.30
  4. Step 4: Simplify right side
    18,707.49x = 288,000,400.85
  5. Step 5: Solve for x
    x = 288,000,400.85/18,707.49
  6. Step 6: Final answer
    x = 15,394.93

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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.