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Finding the Fourth Proportional to 29,509.71, 40,722.87 and 16,081.07

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Solution

The fourth proportional to 29,509.71, 40,722.87 and 16,081.07 is: 22,191.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,509.71 : 40,722.87 = 16,081.07 : x
  2. Step 2: Convert to fraction form
    29,509.71/40,722.87 = 16,081.07/x
  3. Step 3: Cross multiply
    29,509.71x = 40,722.87 × 16,081.07
  4. Step 4: Simplify right side
    29,509.71x = 654,867,119.46
  5. Step 5: Solve for x
    x = 654,867,119.46/29,509.71
  6. Step 6: Final answer
    x = 22,191.58

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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.