Home / 12,816.95-17,687.40-7,511.77

Finding the Fourth Proportional to 12,816.95, 17,687.40 and 7,511.77

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Solution

The fourth proportional to 12,816.95, 17,687.40 and 7,511.77 is: 10,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.95 : 17,687.40 = 7,511.77 : x
  2. Step 2: Convert to fraction form
    12,816.95/17,687.40 = 7,511.77/x
  3. Step 3: Cross multiply
    12,816.95x = 17,687.40 × 7,511.77
  4. Step 4: Simplify right side
    12,816.95x = 132,863,680.70
  5. Step 5: Solve for x
    x = 132,863,680.70/12,816.95
  6. Step 6: Final answer
    x = 10,366.25

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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.