Home / 29,279.42-40,389.14-18,520.96

Finding the Fourth Proportional to 29,279.42, 40,389.14 and 18,520.96

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Solution

The fourth proportional to 29,279.42, 40,389.14 and 18,520.96 is: 25,548.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.42 : 40,389.14 = 18,520.96 : x
  2. Step 2: Convert to fraction form
    29,279.42/40,389.14 = 18,520.96/x
  3. Step 3: Cross multiply
    29,279.42x = 40,389.14 × 18,520.96
  4. Step 4: Simplify right side
    29,279.42x = 748,045,646.37
  5. Step 5: Solve for x
    x = 748,045,646.37/29,279.42
  6. Step 6: Final answer
    x = 25,548.51

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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.