Home / 28,486.89-42,666.85-20,141.66

Finding the Fourth Proportional to 28,486.89, 42,666.85 and 20,141.66

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Solution

The fourth proportional to 28,486.89, 42,666.85 and 20,141.66 is: 30,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.89 : 42,666.85 = 20,141.66 : x
  2. Step 2: Convert to fraction form
    28,486.89/42,666.85 = 20,141.66/x
  3. Step 3: Cross multiply
    28,486.89x = 42,666.85 × 20,141.66
  4. Step 4: Simplify right side
    28,486.89x = 859,381,317.82
  5. Step 5: Solve for x
    x = 859,381,317.82/28,486.89
  6. Step 6: Final answer
    x = 30,167.61

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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.