Home / 27,976.45-38,607.40-15,401.20

Finding the Fourth Proportional to 27,976.45, 38,607.40 and 15,401.20

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Solution

The fourth proportional to 27,976.45, 38,607.40 and 15,401.20 is: 21,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,976.45 : 38,607.40 = 15,401.20 : x
  2. Step 2: Convert to fraction form
    27,976.45/38,607.40 = 15,401.20/x
  3. Step 3: Cross multiply
    27,976.45x = 38,607.40 × 15,401.20
  4. Step 4: Simplify right side
    27,976.45x = 594,600,288.88
  5. Step 5: Solve for x
    x = 594,600,288.88/27,976.45
  6. Step 6: Final answer
    x = 21,253.60

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Double scale
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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.