Home / 15,987.56-22,043.22-13,145

Finding the Fourth Proportional to 15,987.56, 22,043.22 and 13,145

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Solution

The fourth proportional to 15,987.56, 22,043.22 and 13,145 is: 18,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.56 : 22,043.22 = 13,145 : x
  2. Step 2: Convert to fraction form
    15,987.56/22,043.22 = 13,145/x
  3. Step 3: Cross multiply
    15,987.56x = 22,043.22 × 13,145
  4. Step 4: Simplify right side
    15,987.56x = 289,758,126.90
  5. Step 5: Solve for x
    x = 289,758,126.90/15,987.56
  6. Step 6: Final answer
    x = 18,123.97

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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.