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Finding the Fourth Proportional to 29,358.40, 40,451.08 and 19,910.56

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Solution

The fourth proportional to 29,358.40, 40,451.08 and 19,910.56 is: 27,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,358.40 : 40,451.08 = 19,910.56 : x
  2. Step 2: Convert to fraction form
    29,358.40/40,451.08 = 19,910.56/x
  3. Step 3: Cross multiply
    29,358.40x = 40,451.08 × 19,910.56
  4. Step 4: Simplify right side
    29,358.40x = 805,403,655.40
  5. Step 5: Solve for x
    x = 805,403,655.40/29,358.40
  6. Step 6: Final answer
    x = 27,433.50

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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.