Home / 28,418.75-42,622.36-9,688.63

Finding the Fourth Proportional to 28,418.75, 42,622.36 and 9,688.63

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Solution

The fourth proportional to 28,418.75, 42,622.36 and 9,688.63 is: 14,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.75 : 42,622.36 = 9,688.63 : x
  2. Step 2: Convert to fraction form
    28,418.75/42,622.36 = 9,688.63/x
  3. Step 3: Cross multiply
    28,418.75x = 42,622.36 × 9,688.63
  4. Step 4: Simplify right side
    28,418.75x = 412,952,062.66
  5. Step 5: Solve for x
    x = 412,952,062.66/28,418.75
  6. Step 6: Final answer
    x = 14,530.97

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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.