Home / 21,648.78-29,875.29-12,217.14

Finding the Fourth Proportional to 21,648.78, 29,875.29 and 12,217.14

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Solution

The fourth proportional to 21,648.78, 29,875.29 and 12,217.14 is: 16,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.78 : 29,875.29 = 12,217.14 : x
  2. Step 2: Convert to fraction form
    21,648.78/29,875.29 = 12,217.14/x
  3. Step 3: Cross multiply
    21,648.78x = 29,875.29 × 12,217.14
  4. Step 4: Simplify right side
    21,648.78x = 364,990,600.47
  5. Step 5: Solve for x
    x = 364,990,600.47/21,648.78
  6. Step 6: Final answer
    x = 16,859.64

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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.