Home / 22,986.99-31,728.11-13,561.83

Finding the Fourth Proportional to 22,986.99, 31,728.11 and 13,561.83

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Solution

The fourth proportional to 22,986.99, 31,728.11 and 13,561.83 is: 18,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,986.99 : 31,728.11 = 13,561.83 : x
  2. Step 2: Convert to fraction form
    22,986.99/31,728.11 = 13,561.83/x
  3. Step 3: Cross multiply
    22,986.99x = 31,728.11 × 13,561.83
  4. Step 4: Simplify right side
    22,986.99x = 430,291,166.23
  5. Step 5: Solve for x
    x = 430,291,166.23/22,986.99
  6. Step 6: Final answer
    x = 18,718.90

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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.