Home / 20,187.80-30,284.40-7,044.20

Finding the Fourth Proportional to 20,187.80, 30,284.40 and 7,044.20

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Solution

The fourth proportional to 20,187.80, 30,284.40 and 7,044.20 is: 10,567.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.80 : 30,284.40 = 7,044.20 : x
  2. Step 2: Convert to fraction form
    20,187.80/30,284.40 = 7,044.20/x
  3. Step 3: Cross multiply
    20,187.80x = 30,284.40 × 7,044.20
  4. Step 4: Simplify right side
    20,187.80x = 213,329,370.48
  5. Step 5: Solve for x
    x = 213,329,370.48/20,187.80
  6. Step 6: Final answer
    x = 10,567.24

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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.