Home / 55,200.16-82,812.60-20,139.76

Finding the Fourth Proportional to 55,200.16, 82,812.60 and 20,139.76

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Solution

The fourth proportional to 55,200.16, 82,812.60 and 20,139.76 is: 30,214.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,200.16 : 82,812.60 = 20,139.76 : x
  2. Step 2: Convert to fraction form
    55,200.16/82,812.60 = 20,139.76/x
  3. Step 3: Cross multiply
    55,200.16x = 82,812.60 × 20,139.76
  4. Step 4: Simplify right side
    55,200.16x = 1,667,825,888.98
  5. Step 5: Solve for x
    x = 1,667,825,888.98/55,200.16
  6. Step 6: Final answer
    x = 30,214.15

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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.