Home / 18,292.80-25,242.12-13,515.24

Finding the Fourth Proportional to 18,292.80, 25,242.12 and 13,515.24

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Solution

The fourth proportional to 18,292.80, 25,242.12 and 13,515.24 is: 18,649.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,292.80 : 25,242.12 = 13,515.24 : x
  2. Step 2: Convert to fraction form
    18,292.80/25,242.12 = 13,515.24/x
  3. Step 3: Cross multiply
    18,292.80x = 25,242.12 × 13,515.24
  4. Step 4: Simplify right side
    18,292.80x = 341,153,309.91
  5. Step 5: Solve for x
    x = 341,153,309.91/18,292.80
  6. Step 6: Final answer
    x = 18,649.59

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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.