Home / 28,502.08-42,761.76-20,198.16

Finding the Fourth Proportional to 28,502.08, 42,761.76 and 20,198.16

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Solution

The fourth proportional to 28,502.08, 42,761.76 and 20,198.16 is: 30,303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.08 : 42,761.76 = 20,198.16 : x
  2. Step 2: Convert to fraction form
    28,502.08/42,761.76 = 20,198.16/x
  3. Step 3: Cross multiply
    28,502.08x = 42,761.76 × 20,198.16
  4. Step 4: Simplify right side
    28,502.08x = 863,708,870.36
  5. Step 5: Solve for x
    x = 863,708,870.36/28,502.08
  6. Step 6: Final answer
    x = 30,303.36

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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.