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Finding the Fourth Proportional to 32,939.70, 45,453.90 and 19,508.70

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Solution

The fourth proportional to 32,939.70, 45,453.90 and 19,508.70 is: 26,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,939.70 : 45,453.90 = 19,508.70 : x
  2. Step 2: Convert to fraction form
    32,939.70/45,453.90 = 19,508.70/x
  3. Step 3: Cross multiply
    32,939.70x = 45,453.90 × 19,508.70
  4. Step 4: Simplify right side
    32,939.70x = 886,746,498.93
  5. Step 5: Solve for x
    x = 886,746,498.93/32,939.70
  6. Step 6: Final answer
    x = 26,920.30

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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.