Home / 22,719.43-31,352.47-12,647.87

Finding the Fourth Proportional to 22,719.43, 31,352.47 and 12,647.87

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Solution

The fourth proportional to 22,719.43, 31,352.47 and 12,647.87 is: 17,453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,719.43 : 31,352.47 = 12,647.87 : x
  2. Step 2: Convert to fraction form
    22,719.43/31,352.47 = 12,647.87/x
  3. Step 3: Cross multiply
    22,719.43x = 31,352.47 × 12,647.87
  4. Step 4: Simplify right side
    22,719.43x = 396,541,964.74
  5. Step 5: Solve for x
    x = 396,541,964.74/22,719.43
  6. Step 6: Final answer
    x = 17,453.87

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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.