Home / 15,326.07-21,149.51-8,611.53

Finding the Fourth Proportional to 15,326.07, 21,149.51 and 8,611.53

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Solution

The fourth proportional to 15,326.07, 21,149.51 and 8,611.53 is: 11,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.07 : 21,149.51 = 8,611.53 : x
  2. Step 2: Convert to fraction form
    15,326.07/21,149.51 = 8,611.53/x
  3. Step 3: Cross multiply
    15,326.07x = 21,149.51 × 8,611.53
  4. Step 4: Simplify right side
    15,326.07x = 182,129,596.79
  5. Step 5: Solve for x
    x = 182,129,596.79/15,326.07
  6. Step 6: Final answer
    x = 11,883.65

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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.