Home / 21,537.44-29,685.12-16,431.20

Finding the Fourth Proportional to 21,537.44, 29,685.12 and 16,431.20

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Solution

The fourth proportional to 21,537.44, 29,685.12 and 16,431.20 is: 22,647.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,537.44 : 29,685.12 = 16,431.20 : x
  2. Step 2: Convert to fraction form
    21,537.44/29,685.12 = 16,431.20/x
  3. Step 3: Cross multiply
    21,537.44x = 29,685.12 × 16,431.20
  4. Step 4: Simplify right side
    21,537.44x = 487,762,143.74
  5. Step 5: Solve for x
    x = 487,762,143.74/21,537.44
  6. Step 6: Final answer
    x = 22,647.17

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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.