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Finding the Fourth Proportional to 29,679.84, 40,959.24 and 16,251.21

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Solution

The fourth proportional to 29,679.84, 40,959.24 and 16,251.21 is: 22,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,679.84 : 40,959.24 = 16,251.21 : x
  2. Step 2: Convert to fraction form
    29,679.84/40,959.24 = 16,251.21/x
  3. Step 3: Cross multiply
    29,679.84x = 40,959.24 × 16,251.21
  4. Step 4: Simplify right side
    29,679.84x = 665,637,210.68
  5. Step 5: Solve for x
    x = 665,637,210.68/29,679.84
  6. Step 6: Final answer
    x = 22,427.25

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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.