Home / 27,998.04-38,637.74-15,422.78

Finding the Fourth Proportional to 27,998.04, 38,637.74 and 15,422.78

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Solution

The fourth proportional to 27,998.04, 38,637.74 and 15,422.78 is: 21,283.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.04 : 38,637.74 = 15,422.78 : x
  2. Step 2: Convert to fraction form
    27,998.04/38,637.74 = 15,422.78/x
  3. Step 3: Cross multiply
    27,998.04x = 38,637.74 × 15,422.78
  4. Step 4: Simplify right side
    27,998.04x = 595,901,363.72
  5. Step 5: Solve for x
    x = 595,901,363.72/27,998.04
  6. Step 6: Final answer
    x = 21,283.68

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Half scale
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Similar ratio
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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.