Home / 55,517.80-83,247.90-20,439.40

Finding the Fourth Proportional to 55,517.80, 83,247.90 and 20,439.40

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Solution

The fourth proportional to 55,517.80, 83,247.90 and 20,439.40 is: 30,648.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,517.80 : 83,247.90 = 20,439.40 : x
  2. Step 2: Convert to fraction form
    55,517.80/83,247.90 = 20,439.40/x
  3. Step 3: Cross multiply
    55,517.80x = 83,247.90 × 20,439.40
  4. Step 4: Simplify right side
    55,517.80x = 1,701,537,127.26
  5. Step 5: Solve for x
    x = 1,701,537,127.26/55,517.80
  6. Step 6: Final answer
    x = 30,648.50

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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.