Home / 55,518.16-83,278.32-20,439.76

Finding the Fourth Proportional to 55,518.16, 83,278.32 and 20,439.76

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Solution

The fourth proportional to 55,518.16, 83,278.32 and 20,439.76 is: 30,660.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,518.16 : 83,278.32 = 20,439.76 : x
  2. Step 2: Convert to fraction form
    55,518.16/83,278.32 = 20,439.76/x
  3. Step 3: Cross multiply
    55,518.16x = 83,278.32 × 20,439.76
  4. Step 4: Simplify right side
    55,518.16x = 1,702,188,874.00
  5. Step 5: Solve for x
    x = 1,702,188,874.00/55,518.16
  6. Step 6: Final answer
    x = 30,660.04

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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.