Home / 15,309.29-21,125.19-8,595.65

Finding the Fourth Proportional to 15,309.29, 21,125.19 and 8,595.65

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Solution

The fourth proportional to 15,309.29, 21,125.19 and 8,595.65 is: 11,861.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.29 : 21,125.19 = 8,595.65 : x
  2. Step 2: Convert to fraction form
    15,309.29/21,125.19 = 8,595.65/x
  3. Step 3: Cross multiply
    15,309.29x = 21,125.19 × 8,595.65
  4. Step 4: Simplify right side
    15,309.29x = 181,584,824.47
  5. Step 5: Solve for x
    x = 181,584,824.47/15,309.29
  6. Step 6: Final answer
    x = 11,861.09

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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.