Home / 15,263.80-21,063.66-8,976.56

Finding the Fourth Proportional to 15,263.80, 21,063.66 and 8,976.56

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Solution

The fourth proportional to 15,263.80, 21,063.66 and 8,976.56 is: 12,387.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,263.80 : 21,063.66 = 8,976.56 : x
  2. Step 2: Convert to fraction form
    15,263.80/21,063.66 = 8,976.56/x
  3. Step 3: Cross multiply
    15,263.80x = 21,063.66 × 8,976.56
  4. Step 4: Simplify right side
    15,263.80x = 189,079,207.81
  5. Step 5: Solve for x
    x = 189,079,207.81/15,263.80
  6. Step 6: Final answer
    x = 12,387.43

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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.