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Finding the Fourth Proportional to 29,214.88, 40,321.60 and 28,242.88

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Solution

The fourth proportional to 29,214.88, 40,321.60 and 28,242.88 is: 38,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,214.88 : 40,321.60 = 28,242.88 : x
  2. Step 2: Convert to fraction form
    29,214.88/40,321.60 = 28,242.88/x
  3. Step 3: Cross multiply
    29,214.88x = 40,321.60 × 28,242.88
  4. Step 4: Simplify right side
    29,214.88x = 1,138,798,110.21
  5. Step 5: Solve for x
    x = 1,138,798,110.21/29,214.88
  6. Step 6: Final answer
    x = 38,980.07

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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.