Home / 38,117.81-57,178.34-11,821.97

Finding the Fourth Proportional to 38,117.81, 57,178.34 and 11,821.97

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Solution

The fourth proportional to 38,117.81, 57,178.34 and 11,821.97 is: 17,733.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,117.81 : 57,178.34 = 11,821.97 : x
  2. Step 2: Convert to fraction form
    38,117.81/57,178.34 = 11,821.97/x
  3. Step 3: Cross multiply
    38,117.81x = 57,178.34 × 11,821.97
  4. Step 4: Simplify right side
    38,117.81x = 675,960,275.13
  5. Step 5: Solve for x
    x = 675,960,275.13/38,117.81
  6. Step 6: Final answer
    x = 17,733.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.