Home / 22,711.75-31,346.55-12,775.75

Finding the Fourth Proportional to 22,711.75, 31,346.55 and 12,775.75

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Solution

The fourth proportional to 22,711.75, 31,346.55 and 12,775.75 is: 17,632.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.75 : 31,346.55 = 12,775.75 : x
  2. Step 2: Convert to fraction form
    22,711.75/31,346.55 = 12,775.75/x
  3. Step 3: Cross multiply
    22,711.75x = 31,346.55 × 12,775.75
  4. Step 4: Simplify right side
    22,711.75x = 400,475,686.16
  5. Step 5: Solve for x
    x = 400,475,686.16/22,711.75
  6. Step 6: Final answer
    x = 17,632.97

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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.