Home / 15,401.40-21,253.92-8,327.76

Finding the Fourth Proportional to 15,401.40, 21,253.92 and 8,327.76

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Solution

The fourth proportional to 15,401.40, 21,253.92 and 8,327.76 is: 11,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.40 : 21,253.92 = 8,327.76 : x
  2. Step 2: Convert to fraction form
    15,401.40/21,253.92 = 8,327.76/x
  3. Step 3: Cross multiply
    15,401.40x = 21,253.92 × 8,327.76
  4. Step 4: Simplify right side
    15,401.40x = 176,997,544.82
  5. Step 5: Solve for x
    x = 176,997,544.82/15,401.40
  6. Step 6: Final answer
    x = 11,492.30

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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.