Home / 28,505.34-39,327.76-18,446.50

Finding the Fourth Proportional to 28,505.34, 39,327.76 and 18,446.50

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Solution

The fourth proportional to 28,505.34, 39,327.76 and 18,446.50 is: 25,449.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.34 : 39,327.76 = 18,446.50 : x
  2. Step 2: Convert to fraction form
    28,505.34/39,327.76 = 18,446.50/x
  3. Step 3: Cross multiply
    28,505.34x = 39,327.76 × 18,446.50
  4. Step 4: Simplify right side
    28,505.34x = 725,459,380.40
  5. Step 5: Solve for x
    x = 725,459,380.40/28,505.34
  6. Step 6: Final answer
    x = 25,449.95

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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.