Home / 21,336.17-29,449.19-12,959.69

Finding the Fourth Proportional to 21,336.17, 29,449.19 and 12,959.69

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Solution

The fourth proportional to 21,336.17, 29,449.19 and 12,959.69 is: 17,887.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.17 : 29,449.19 = 12,959.69 : x
  2. Step 2: Convert to fraction form
    21,336.17/29,449.19 = 12,959.69/x
  3. Step 3: Cross multiply
    21,336.17x = 29,449.19 × 12,959.69
  4. Step 4: Simplify right side
    21,336.17x = 381,652,308.35
  5. Step 5: Solve for x
    x = 381,652,308.35/21,336.17
  6. Step 6: Final answer
    x = 17,887.57

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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.