Home / 55,255.76-82,921.92-21,972.40

Finding the Fourth Proportional to 55,255.76, 82,921.92 and 21,972.40

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Solution

The fourth proportional to 55,255.76, 82,921.92 and 21,972.40 is: 32,973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,255.76 : 82,921.92 = 21,972.40 : x
  2. Step 2: Convert to fraction form
    55,255.76/82,921.92 = 21,972.40/x
  3. Step 3: Cross multiply
    55,255.76x = 82,921.92 × 21,972.40
  4. Step 4: Simplify right side
    55,255.76x = 1,821,993,595.01
  5. Step 5: Solve for x
    x = 1,821,993,595.01/55,255.76
  6. Step 6: Final answer
    x = 32,973.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.