Home / 12,921.85-17,834.48-7,616.35

Finding the Fourth Proportional to 12,921.85, 17,834.48 and 7,616.35

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Solution

The fourth proportional to 12,921.85, 17,834.48 and 7,616.35 is: 10,511.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.85 : 17,834.48 = 7,616.35 : x
  2. Step 2: Convert to fraction form
    12,921.85/17,834.48 = 7,616.35/x
  3. Step 3: Cross multiply
    12,921.85x = 17,834.48 × 7,616.35
  4. Step 4: Simplify right side
    12,921.85x = 135,833,641.75
  5. Step 5: Solve for x
    x = 135,833,641.75/12,921.85
  6. Step 6: Final answer
    x = 10,511.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.