Home / 12,659.76-18,989.40-5,726.16

Finding the Fourth Proportional to 12,659.76, 18,989.40 and 5,726.16

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Solution

The fourth proportional to 12,659.76, 18,989.40 and 5,726.16 is: 8,589.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.76 : 18,989.40 = 5,726.16 : x
  2. Step 2: Convert to fraction form
    12,659.76/18,989.40 = 5,726.16/x
  3. Step 3: Cross multiply
    12,659.76x = 18,989.40 × 5,726.16
  4. Step 4: Simplify right side
    12,659.76x = 108,736,342.70
  5. Step 5: Solve for x
    x = 108,736,342.70/12,659.76
  6. Step 6: Final answer
    x = 8,589.13

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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.