Home / 28,861.19-39,797.10-18,770.91

Finding the Fourth Proportional to 28,861.19, 39,797.10 and 18,770.91

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Solution

The fourth proportional to 28,861.19, 39,797.10 and 18,770.91 is: 25,883.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.19 : 39,797.10 = 18,770.91 : x
  2. Step 2: Convert to fraction form
    28,861.19/39,797.10 = 18,770.91/x
  3. Step 3: Cross multiply
    28,861.19x = 39,797.10 × 18,770.91
  4. Step 4: Simplify right side
    28,861.19x = 747,027,916.12
  5. Step 5: Solve for x
    x = 747,027,916.12/28,861.19
  6. Step 6: Final answer
    x = 25,883.48

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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.