Home / 22,769.40-31,430.43-17,120.55

Finding the Fourth Proportional to 22,769.40, 31,430.43 and 17,120.55

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Solution

The fourth proportional to 22,769.40, 31,430.43 and 17,120.55 is: 23,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,769.40 : 31,430.43 = 17,120.55 : x
  2. Step 2: Convert to fraction form
    22,769.40/31,430.43 = 17,120.55/x
  3. Step 3: Cross multiply
    22,769.40x = 31,430.43 × 17,120.55
  4. Step 4: Simplify right side
    22,769.40x = 538,106,162.73
  5. Step 5: Solve for x
    x = 538,106,162.73/22,769.40
  6. Step 6: Final answer
    x = 23,632.87

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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.