Home / 21,747.40-32,767.30-19,669.72

Finding the Fourth Proportional to 21,747.40, 32,767.30 and 19,669.72

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Solution

The fourth proportional to 21,747.40, 32,767.30 and 19,669.72 is: 29,636.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.40 : 32,767.30 = 19,669.72 : x
  2. Step 2: Convert to fraction form
    21,747.40/32,767.30 = 19,669.72/x
  3. Step 3: Cross multiply
    21,747.40x = 32,767.30 × 19,669.72
  4. Step 4: Simplify right side
    21,747.40x = 644,523,616.16
  5. Step 5: Solve for x
    x = 644,523,616.16/21,747.40
  6. Step 6: Final answer
    x = 29,636.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.