Home / 27,976.78-38,607.15-15,401.53

Finding the Fourth Proportional to 27,976.78, 38,607.15 and 15,401.53

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Solution

The fourth proportional to 27,976.78, 38,607.15 and 15,401.53 is: 21,253.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,976.78 : 38,607.15 = 15,401.53 : x
  2. Step 2: Convert to fraction form
    27,976.78/38,607.15 = 15,401.53/x
  3. Step 3: Cross multiply
    27,976.78x = 38,607.15 × 15,401.53
  4. Step 4: Simplify right side
    27,976.78x = 594,609,178.94
  5. Step 5: Solve for x
    x = 594,609,178.94/27,976.78
  6. Step 6: Final answer
    x = 21,253.67

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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.