Home / 20,861.95-31,252.60-11,599.87

Finding the Fourth Proportional to 20,861.95, 31,252.60 and 11,599.87

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Solution

The fourth proportional to 20,861.95, 31,252.60 and 11,599.87 is: 17,377.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.95 : 31,252.60 = 11,599.87 : x
  2. Step 2: Convert to fraction form
    20,861.95/31,252.60 = 11,599.87/x
  3. Step 3: Cross multiply
    20,861.95x = 31,252.60 × 11,599.87
  4. Step 4: Simplify right side
    20,861.95x = 362,526,097.16
  5. Step 5: Solve for x
    x = 362,526,097.16/20,861.95
  6. Step 6: Final answer
    x = 17,377.38

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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.