Home / 15,022.15-20,728.73-8,306.87

Finding the Fourth Proportional to 15,022.15, 20,728.73 and 8,306.87

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Solution

The fourth proportional to 15,022.15, 20,728.73 and 8,306.87 is: 11,462.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.15 : 20,728.73 = 8,306.87 : x
  2. Step 2: Convert to fraction form
    15,022.15/20,728.73 = 8,306.87/x
  3. Step 3: Cross multiply
    15,022.15x = 20,728.73 × 8,306.87
  4. Step 4: Simplify right side
    15,022.15x = 172,190,782.50
  5. Step 5: Solve for x
    x = 172,190,782.50/15,022.15
  6. Step 6: Final answer
    x = 11,462.46

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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.