Home / 15,496.07-21,381.03-8,780.15

Finding the Fourth Proportional to 15,496.07, 21,381.03 and 8,780.15

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Solution

The fourth proportional to 15,496.07, 21,381.03 and 8,780.15 is: 12,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.07 : 21,381.03 = 8,780.15 : x
  2. Step 2: Convert to fraction form
    15,496.07/21,381.03 = 8,780.15/x
  3. Step 3: Cross multiply
    15,496.07x = 21,381.03 × 8,780.15
  4. Step 4: Simplify right side
    15,496.07x = 187,728,543.65
  5. Step 5: Solve for x
    x = 187,728,543.65/15,496.07
  6. Step 6: Final answer
    x = 12,114.59

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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.