Home / 28,462.66-42,715.77-12,891.22

Finding the Fourth Proportional to 28,462.66, 42,715.77 and 12,891.22

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Solution

The fourth proportional to 28,462.66, 42,715.77 and 12,891.22 is: 19,346.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.66 : 42,715.77 = 12,891.22 : x
  2. Step 2: Convert to fraction form
    28,462.66/42,715.77 = 12,891.22/x
  3. Step 3: Cross multiply
    28,462.66x = 42,715.77 × 12,891.22
  4. Step 4: Simplify right side
    28,462.66x = 550,658,388.54
  5. Step 5: Solve for x
    x = 550,658,388.54/28,462.66
  6. Step 6: Final answer
    x = 19,346.69

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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.