Home / 28,114.18-42,166.92-12,315.76

Finding the Fourth Proportional to 28,114.18, 42,166.92 and 12,315.76

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Solution

The fourth proportional to 28,114.18, 42,166.92 and 12,315.76 is: 18,471.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.18 : 42,166.92 = 12,315.76 : x
  2. Step 2: Convert to fraction form
    28,114.18/42,166.92 = 12,315.76/x
  3. Step 3: Cross multiply
    28,114.18x = 42,166.92 × 12,315.76
  4. Step 4: Simplify right side
    28,114.18x = 519,317,666.66
  5. Step 5: Solve for x
    x = 519,317,666.66/28,114.18
  6. Step 6: Final answer
    x = 18,471.73

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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.