Home / 22,945.16-31,660.49-13,515.59

Finding the Fourth Proportional to 22,945.16, 31,660.49 and 13,515.59

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Solution

The fourth proportional to 22,945.16, 31,660.49 and 13,515.59 is: 18,649.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,945.16 : 31,660.49 = 13,515.59 : x
  2. Step 2: Convert to fraction form
    22,945.16/31,660.49 = 13,515.59/x
  3. Step 3: Cross multiply
    22,945.16x = 31,660.49 × 13,515.59
  4. Step 4: Simplify right side
    22,945.16x = 427,910,134.46
  5. Step 5: Solve for x
    x = 427,910,134.46/22,945.16
  6. Step 6: Final answer
    x = 18,649.25

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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.