Home / 55,890.60-83,826.30-20,812.20

Finding the Fourth Proportional to 55,890.60, 83,826.30 and 20,812.20

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Solution

The fourth proportional to 55,890.60, 83,826.30 and 20,812.20 is: 31,214.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,890.60 : 83,826.30 = 20,812.20 : x
  2. Step 2: Convert to fraction form
    55,890.60/83,826.30 = 20,812.20/x
  3. Step 3: Cross multiply
    55,890.60x = 83,826.30 × 20,812.20
  4. Step 4: Simplify right side
    55,890.60x = 1,744,609,720.86
  5. Step 5: Solve for x
    x = 1,744,609,720.86/55,890.60
  6. Step 6: Final answer
    x = 31,214.73

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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.