Home / 31,242.68-43,134.66-19,312.80

Finding the Fourth Proportional to 31,242.68, 43,134.66 and 19,312.80

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Solution

The fourth proportional to 31,242.68, 43,134.66 and 19,312.80 is: 26,663.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,242.68 : 43,134.66 = 19,312.80 : x
  2. Step 2: Convert to fraction form
    31,242.68/43,134.66 = 19,312.80/x
  3. Step 3: Cross multiply
    31,242.68x = 43,134.66 × 19,312.80
  4. Step 4: Simplify right side
    31,242.68x = 833,051,061.65
  5. Step 5: Solve for x
    x = 833,051,061.65/31,242.68
  6. Step 6: Final answer
    x = 26,663.88

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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.