Home / 13,143.56-19,680.84-10,498.88

Finding the Fourth Proportional to 13,143.56, 19,680.84 and 10,498.88

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Solution

The fourth proportional to 13,143.56, 19,680.84 and 10,498.88 is: 15,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.56 : 19,680.84 = 10,498.88 : x
  2. Step 2: Convert to fraction form
    13,143.56/19,680.84 = 10,498.88/x
  3. Step 3: Cross multiply
    13,143.56x = 19,680.84 × 10,498.88
  4. Step 4: Simplify right side
    13,143.56x = 206,626,777.46
  5. Step 5: Solve for x
    x = 206,626,777.46/13,143.56
  6. Step 6: Final answer
    x = 15,720.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.