Home / 26,607.78-36,721.20-15,278.76

Finding the Fourth Proportional to 26,607.78, 36,721.20 and 15,278.76

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Solution

The fourth proportional to 26,607.78, 36,721.20 and 15,278.76 is: 21,086.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,607.78 : 36,721.20 = 15,278.76 : x
  2. Step 2: Convert to fraction form
    26,607.78/36,721.20 = 15,278.76/x
  3. Step 3: Cross multiply
    26,607.78x = 36,721.20 × 15,278.76
  4. Step 4: Simplify right side
    26,607.78x = 561,054,401.71
  5. Step 5: Solve for x
    x = 561,054,401.71/26,607.78
  6. Step 6: Final answer
    x = 21,086.10

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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.