Home / 16,921.76-23,337.87-12,682.78

Finding the Fourth Proportional to 16,921.76, 23,337.87 and 12,682.78

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Solution

The fourth proportional to 16,921.76, 23,337.87 and 12,682.78 is: 17,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.76 : 23,337.87 = 12,682.78 : x
  2. Step 2: Convert to fraction form
    16,921.76/23,337.87 = 12,682.78/x
  3. Step 3: Cross multiply
    16,921.76x = 23,337.87 × 12,682.78
  4. Step 4: Simplify right side
    16,921.76x = 295,989,036.31
  5. Step 5: Solve for x
    x = 295,989,036.31/16,921.76
  6. Step 6: Final answer
    x = 17,491.62

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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.