Home / 31,186.98-43,034.72-18,440.65

Finding the Fourth Proportional to 31,186.98, 43,034.72 and 18,440.65

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Solution

The fourth proportional to 31,186.98, 43,034.72 and 18,440.65 is: 25,446.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.98 : 43,034.72 = 18,440.65 : x
  2. Step 2: Convert to fraction form
    31,186.98/43,034.72 = 18,440.65/x
  3. Step 3: Cross multiply
    31,186.98x = 43,034.72 × 18,440.65
  4. Step 4: Simplify right side
    31,186.98x = 793,588,009.58
  5. Step 5: Solve for x
    x = 793,588,009.58/31,186.98
  6. Step 6: Final answer
    x = 25,446.13

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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.