Home / 12,876.05-17,764.80-7,209.95

Finding the Fourth Proportional to 12,876.05, 17,764.80 and 7,209.95

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Solution

The fourth proportional to 12,876.05, 17,764.80 and 7,209.95 is: 9,947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.05 : 17,764.80 = 7,209.95 : x
  2. Step 2: Convert to fraction form
    12,876.05/17,764.80 = 7,209.95/x
  3. Step 3: Cross multiply
    12,876.05x = 17,764.80 × 7,209.95
  4. Step 4: Simplify right side
    12,876.05x = 128,083,319.76
  5. Step 5: Solve for x
    x = 128,083,319.76/12,876.05
  6. Step 6: Final answer
    x = 9,947.41

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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.