Home / 28,629.77-42,947.85-9,911.48

Finding the Fourth Proportional to 28,629.77, 42,947.85 and 9,911.48

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Solution

The fourth proportional to 28,629.77, 42,947.85 and 9,911.48 is: 14,868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.77 : 42,947.85 = 9,911.48 : x
  2. Step 2: Convert to fraction form
    28,629.77/42,947.85 = 9,911.48/x
  3. Step 3: Cross multiply
    28,629.77x = 42,947.85 × 9,911.48
  4. Step 4: Simplify right side
    28,629.77x = 425,676,820.33
  5. Step 5: Solve for x
    x = 425,676,820.33/28,629.77
  6. Step 6: Final answer
    x = 14,868.33

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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.