Home / 28,501.56-42,761.00-20,197.65

Finding the Fourth Proportional to 28,501.56, 42,761.00 and 20,197.65

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Solution

The fourth proportional to 28,501.56, 42,761.00 and 20,197.65 is: 30,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.56 : 42,761.00 = 20,197.65 : x
  2. Step 2: Convert to fraction form
    28,501.56/42,761.00 = 20,197.65/x
  3. Step 3: Cross multiply
    28,501.56x = 42,761.00 × 20,197.65
  4. Step 4: Simplify right side
    28,501.56x = 863,671,610.66
  5. Step 5: Solve for x
    x = 863,671,610.66/28,501.56
  6. Step 6: Final answer
    x = 30,302.61

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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.