Home / 22,561.81-31,134.29-12,489.54

Finding the Fourth Proportional to 22,561.81, 31,134.29 and 12,489.54

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Solution

The fourth proportional to 22,561.81, 31,134.29 and 12,489.54 is: 17,235.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,561.81 : 31,134.29 = 12,489.54 : x
  2. Step 2: Convert to fraction form
    22,561.81/31,134.29 = 12,489.54/x
  3. Step 3: Cross multiply
    22,561.81x = 31,134.29 × 12,489.54
  4. Step 4: Simplify right side
    22,561.81x = 388,852,897.88
  5. Step 5: Solve for x
    x = 388,852,897.88/22,561.81
  6. Step 6: Final answer
    x = 17,235.01

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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.