Home / 27,960.06-38,599.17-21,572.31

Finding the Fourth Proportional to 27,960.06, 38,599.17 and 21,572.31

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Solution

The fourth proportional to 27,960.06, 38,599.17 and 21,572.31 is: 29,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960.06 : 38,599.17 = 21,572.31 : x
  2. Step 2: Convert to fraction form
    27,960.06/38,599.17 = 21,572.31/x
  3. Step 3: Cross multiply
    27,960.06x = 38,599.17 × 21,572.31
  4. Step 4: Simplify right side
    27,960.06x = 832,672,960.13
  5. Step 5: Solve for x
    x = 832,672,960.13/27,960.06
  6. Step 6: Final answer
    x = 29,780.81

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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.