Home / 28,531.10-39,372.68-15,955.85

Finding the Fourth Proportional to 28,531.10, 39,372.68 and 15,955.85

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Solution

The fourth proportional to 28,531.10, 39,372.68 and 15,955.85 is: 22,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.10 : 39,372.68 = 15,955.85 : x
  2. Step 2: Convert to fraction form
    28,531.10/39,372.68 = 15,955.85/x
  3. Step 3: Cross multiply
    28,531.10x = 39,372.68 × 15,955.85
  4. Step 4: Simplify right side
    28,531.10x = 628,224,299.54
  5. Step 5: Solve for x
    x = 628,224,299.54/28,531.10
  6. Step 6: Final answer
    x = 22,018.93

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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.