Home / 55,243.20-82,864.80-13,690.20

Finding the Fourth Proportional to 55,243.20, 82,864.80 and 13,690.20

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Solution

The fourth proportional to 55,243.20, 82,864.80 and 13,690.20 is: 20,535.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,243.20 : 82,864.80 = 13,690.20 : x
  2. Step 2: Convert to fraction form
    55,243.20/82,864.80 = 13,690.20/x
  3. Step 3: Cross multiply
    55,243.20x = 82,864.80 × 13,690.20
  4. Step 4: Simplify right side
    55,243.20x = 1,134,435,684.96
  5. Step 5: Solve for x
    x = 1,134,435,684.96/55,243.20
  6. Step 6: Final answer
    x = 20,535.30

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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.