Home / 20,675.61-28,535.06-20,112.68

Finding the Fourth Proportional to 20,675.61, 28,535.06 and 20,112.68

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Solution

The fourth proportional to 20,675.61, 28,535.06 and 20,112.68 is: 27,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.61 : 28,535.06 = 20,112.68 : x
  2. Step 2: Convert to fraction form
    20,675.61/28,535.06 = 20,112.68/x
  3. Step 3: Cross multiply
    20,675.61x = 28,535.06 × 20,112.68
  4. Step 4: Simplify right side
    20,675.61x = 573,916,530.56
  5. Step 5: Solve for x
    x = 573,916,530.56/20,675.61
  6. Step 6: Final answer
    x = 27,758.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.