Home / 21,125.47-29,207.88-20,196

Finding the Fourth Proportional to 21,125.47, 29,207.88 and 20,196

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Solution

The fourth proportional to 21,125.47, 29,207.88 and 20,196 is: 27,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.47 : 29,207.88 = 20,196 : x
  2. Step 2: Convert to fraction form
    21,125.47/29,207.88 = 20,196/x
  3. Step 3: Cross multiply
    21,125.47x = 29,207.88 × 20,196
  4. Step 4: Simplify right side
    21,125.47x = 589,882,344.48
  5. Step 5: Solve for x
    x = 589,882,344.48/21,125.47
  6. Step 6: Final answer
    x = 27,922.80

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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.