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Finding the Fourth Proportional to 29,021.30, 40,042.40 and 18,407.06

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Solution

The fourth proportional to 29,021.30, 40,042.40 and 18,407.06 is: 25,397.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,021.30 : 40,042.40 = 18,407.06 : x
  2. Step 2: Convert to fraction form
    29,021.30/40,042.40 = 18,407.06/x
  3. Step 3: Cross multiply
    29,021.30x = 40,042.40 × 18,407.06
  4. Step 4: Simplify right side
    29,021.30x = 737,062,859.34
  5. Step 5: Solve for x
    x = 737,062,859.34/29,021.30
  6. Step 6: Final answer
    x = 25,397.31

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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.