Home / 20,792.24-28,683.30-15,118.20

Finding the Fourth Proportional to 20,792.24, 28,683.30 and 15,118.20

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Solution

The fourth proportional to 20,792.24, 28,683.30 and 15,118.20 is: 20,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.24 : 28,683.30 = 15,118.20 : x
  2. Step 2: Convert to fraction form
    20,792.24/28,683.30 = 15,118.20/x
  3. Step 3: Cross multiply
    20,792.24x = 28,683.30 × 15,118.20
  4. Step 4: Simplify right side
    20,792.24x = 433,639,866.06
  5. Step 5: Solve for x
    x = 433,639,866.06/20,792.24
  6. Step 6: Final answer
    x = 20,855.85

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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.