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Finding the Fourth Proportional to 29,486.92, 40,685.40 and 16,911.68

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Solution

The fourth proportional to 29,486.92, 40,685.40 and 16,911.68 is: 23,334.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,486.92 : 40,685.40 = 16,911.68 : x
  2. Step 2: Convert to fraction form
    29,486.92/40,685.40 = 16,911.68/x
  3. Step 3: Cross multiply
    29,486.92x = 40,685.40 × 16,911.68
  4. Step 4: Simplify right side
    29,486.92x = 688,058,465.47
  5. Step 5: Solve for x
    x = 688,058,465.47/29,486.92
  6. Step 6: Final answer
    x = 23,334.36

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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.