Home / 28,230.68-42,309.08-11,571.20

Finding the Fourth Proportional to 28,230.68, 42,309.08 and 11,571.20

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Solution

The fourth proportional to 28,230.68, 42,309.08 and 11,571.20 is: 17,341.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.68 : 42,309.08 = 11,571.20 : x
  2. Step 2: Convert to fraction form
    28,230.68/42,309.08 = 11,571.20/x
  3. Step 3: Cross multiply
    28,230.68x = 42,309.08 × 11,571.20
  4. Step 4: Simplify right side
    28,230.68x = 489,566,826.50
  5. Step 5: Solve for x
    x = 489,566,826.50/28,230.68
  6. Step 6: Final answer
    x = 17,341.66

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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.