Home / 29,490.75-40,640.40-18,861.93

Finding the Fourth Proportional to 29,490.75, 40,640.40 and 18,861.93

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Solution

The fourth proportional to 29,490.75, 40,640.40 and 18,861.93 is: 25,993.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,490.75 : 40,640.40 = 18,861.93 : x
  2. Step 2: Convert to fraction form
    29,490.75/40,640.40 = 18,861.93/x
  3. Step 3: Cross multiply
    29,490.75x = 40,640.40 × 18,861.93
  4. Step 4: Simplify right side
    29,490.75x = 766,556,379.97
  5. Step 5: Solve for x
    x = 766,556,379.97/29,490.75
  6. Step 6: Final answer
    x = 25,993.11

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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.