Home / 20,660.24-30,987.12-7,510.70

Finding the Fourth Proportional to 20,660.24, 30,987.12 and 7,510.70

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Solution

The fourth proportional to 20,660.24, 30,987.12 and 7,510.70 is: 11,264.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.24 : 30,987.12 = 7,510.70 : x
  2. Step 2: Convert to fraction form
    20,660.24/30,987.12 = 7,510.70/x
  3. Step 3: Cross multiply
    20,660.24x = 30,987.12 × 7,510.70
  4. Step 4: Simplify right side
    20,660.24x = 232,734,962.18
  5. Step 5: Solve for x
    x = 232,734,962.18/20,660.24
  6. Step 6: Final answer
    x = 11,264.87

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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.