Home / 25,888.34-38,774.17-18,131.78

Finding the Fourth Proportional to 25,888.34, 38,774.17 and 18,131.78

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Solution

The fourth proportional to 25,888.34, 38,774.17 and 18,131.78 is: 27,156.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,888.34 : 38,774.17 = 18,131.78 : x
  2. Step 2: Convert to fraction form
    25,888.34/38,774.17 = 18,131.78/x
  3. Step 3: Cross multiply
    25,888.34x = 38,774.17 × 18,131.78
  4. Step 4: Simplify right side
    25,888.34x = 703,044,720.12
  5. Step 5: Solve for x
    x = 703,044,720.12/25,888.34
  6. Step 6: Final answer
    x = 27,156.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.