Home / 21,217.96-29,278.56-12,264.76

Finding the Fourth Proportional to 21,217.96, 29,278.56 and 12,264.76

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Solution

The fourth proportional to 21,217.96, 29,278.56 and 12,264.76 is: 16,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.96 : 29,278.56 = 12,264.76 : x
  2. Step 2: Convert to fraction form
    21,217.96/29,278.56 = 12,264.76/x
  3. Step 3: Cross multiply
    21,217.96x = 29,278.56 × 12,264.76
  4. Step 4: Simplify right side
    21,217.96x = 359,094,511.55
  5. Step 5: Solve for x
    x = 359,094,511.55/21,217.96
  6. Step 6: Final answer
    x = 16,924.08

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Double scale
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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.