Home / 15,320.65-21,141.70-8,606.56

Finding the Fourth Proportional to 15,320.65, 21,141.70 and 8,606.56

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Solution

The fourth proportional to 15,320.65, 21,141.70 and 8,606.56 is: 11,876.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.65 : 21,141.70 = 8,606.56 : x
  2. Step 2: Convert to fraction form
    15,320.65/21,141.70 = 8,606.56/x
  3. Step 3: Cross multiply
    15,320.65x = 21,141.70 × 8,606.56
  4. Step 4: Simplify right side
    15,320.65x = 181,957,309.55
  5. Step 5: Solve for x
    x = 181,957,309.55/15,320.65
  6. Step 6: Final answer
    x = 11,876.61

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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.