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Finding the Fourth Proportional to 29,090.40, 40,143.68 and 17,778.82

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Solution

The fourth proportional to 29,090.40, 40,143.68 and 17,778.82 is: 24,534.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,090.40 : 40,143.68 = 17,778.82 : x
  2. Step 2: Convert to fraction form
    29,090.40/40,143.68 = 17,778.82/x
  3. Step 3: Cross multiply
    29,090.40x = 40,143.68 × 17,778.82
  4. Step 4: Simplify right side
    29,090.40x = 713,707,260.86
  5. Step 5: Solve for x
    x = 713,707,260.86/29,090.40
  6. Step 6: Final answer
    x = 24,534.12

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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.