Home / 15,309.65-21,126.62-8,595.15

Finding the Fourth Proportional to 15,309.65, 21,126.62 and 8,595.15

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Solution

The fourth proportional to 15,309.65, 21,126.62 and 8,595.15 is: 11,860.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.65 : 21,126.62 = 8,595.15 : x
  2. Step 2: Convert to fraction form
    15,309.65/21,126.62 = 8,595.15/x
  3. Step 3: Cross multiply
    15,309.65x = 21,126.62 × 8,595.15
  4. Step 4: Simplify right side
    15,309.65x = 181,586,467.89
  5. Step 5: Solve for x
    x = 181,586,467.89/15,309.65
  6. Step 6: Final answer
    x = 11,860.92

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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.