Home / 38,139.66-52,631.47-21,144.65

Finding the Fourth Proportional to 38,139.66, 52,631.47 and 21,144.65

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Solution

The fourth proportional to 38,139.66, 52,631.47 and 21,144.65 is: 29,178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139.66 : 52,631.47 = 21,144.65 : x
  2. Step 2: Convert to fraction form
    38,139.66/52,631.47 = 21,144.65/x
  3. Step 3: Cross multiply
    38,139.66x = 52,631.47 × 21,144.65
  4. Step 4: Simplify right side
    38,139.66x = 1,112,873,775.41
  5. Step 5: Solve for x
    x = 1,112,873,775.41/38,139.66
  6. Step 6: Final answer
    x = 29,178.91

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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.