Home / 15,429.35-21,293.75-8,716.61

Finding the Fourth Proportional to 15,429.35, 21,293.75 and 8,716.61

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Solution

The fourth proportional to 15,429.35, 21,293.75 and 8,716.61 is: 12,029.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.35 : 21,293.75 = 8,716.61 : x
  2. Step 2: Convert to fraction form
    15,429.35/21,293.75 = 8,716.61/x
  3. Step 3: Cross multiply
    15,429.35x = 21,293.75 × 8,716.61
  4. Step 4: Simplify right side
    15,429.35x = 185,609,314.19
  5. Step 5: Solve for x
    x = 185,609,314.19/15,429.35
  6. Step 6: Final answer
    x = 12,029.63

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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.