Home / 21,639.76-29,862.30-12,207.58

Finding the Fourth Proportional to 21,639.76, 29,862.30 and 12,207.58

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Solution

The fourth proportional to 21,639.76, 29,862.30 and 12,207.58 is: 16,846.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.76 : 29,862.30 = 12,207.58 : x
  2. Step 2: Convert to fraction form
    21,639.76/29,862.30 = 12,207.58/x
  3. Step 3: Cross multiply
    21,639.76x = 29,862.30 × 12,207.58
  4. Step 4: Simplify right side
    21,639.76x = 364,546,416.23
  5. Step 5: Solve for x
    x = 364,546,416.23/21,639.76
  6. Step 6: Final answer
    x = 16,846.14

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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.