Home / 55,430.80-83,146.20-20,365.90

Finding the Fourth Proportional to 55,430.80, 83,146.20 and 20,365.90

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Solution

The fourth proportional to 55,430.80, 83,146.20 and 20,365.90 is: 30,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,430.80 : 83,146.20 = 20,365.90 : x
  2. Step 2: Convert to fraction form
    55,430.80/83,146.20 = 20,365.90/x
  3. Step 3: Cross multiply
    55,430.80x = 83,146.20 × 20,365.90
  4. Step 4: Simplify right side
    55,430.80x = 1,693,347,194.58
  5. Step 5: Solve for x
    x = 1,693,347,194.58/55,430.80
  6. Step 6: Final answer
    x = 30,548.85

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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.