Home / 15,008.76-20,707.56-8,719.92

Finding the Fourth Proportional to 15,008.76, 20,707.56 and 8,719.92

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Solution

The fourth proportional to 15,008.76, 20,707.56 and 8,719.92 is: 12,030.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.76 : 20,707.56 = 8,719.92 : x
  2. Step 2: Convert to fraction form
    15,008.76/20,707.56 = 8,719.92/x
  3. Step 3: Cross multiply
    15,008.76x = 20,707.56 × 8,719.92
  4. Step 4: Simplify right side
    15,008.76x = 180,568,266.60
  5. Step 5: Solve for x
    x = 180,568,266.60/15,008.76
  6. Step 6: Final answer
    x = 12,030.86

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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.