Home / 31,186.48-43,034.02-18,440.14

Finding the Fourth Proportional to 31,186.48, 43,034.02 and 18,440.14

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Solution

The fourth proportional to 31,186.48, 43,034.02 and 18,440.14 is: 25,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.48 : 43,034.02 = 18,440.14 : x
  2. Step 2: Convert to fraction form
    31,186.48/43,034.02 = 18,440.14/x
  3. Step 3: Cross multiply
    31,186.48x = 43,034.02 × 18,440.14
  4. Step 4: Simplify right side
    31,186.48x = 793,553,353.56
  5. Step 5: Solve for x
    x = 793,553,353.56/31,186.48
  6. Step 6: Final answer
    x = 25,445.43

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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.