Home / 38,730.66-53,443.92-21,732.68

Finding the Fourth Proportional to 38,730.66, 53,443.92 and 21,732.68

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Solution

The fourth proportional to 38,730.66, 53,443.92 and 21,732.68 is: 29,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,730.66 : 53,443.92 = 21,732.68 : x
  2. Step 2: Convert to fraction form
    38,730.66/53,443.92 = 21,732.68/x
  3. Step 3: Cross multiply
    38,730.66x = 53,443.92 × 21,732.68
  4. Step 4: Simplify right side
    38,730.66x = 1,161,479,611.31
  5. Step 5: Solve for x
    x = 1,161,479,611.31/38,730.66
  6. Step 6: Final answer
    x = 29,988.63

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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.