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Finding the Fourth Proportional to 20,003.70, 29,947.95 and 19,427.70

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Solution

The fourth proportional to 20,003.70, 29,947.95 and 19,427.70 is: 29,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.70 : 29,947.95 = 19,427.70 : x
  2. Step 2: Convert to fraction form
    20,003.70/29,947.95 = 19,427.70/x
  3. Step 3: Cross multiply
    20,003.70x = 29,947.95 × 19,427.70
  4. Step 4: Simplify right side
    20,003.70x = 581,819,788.22
  5. Step 5: Solve for x
    x = 581,819,788.22/20,003.70
  6. Step 6: Final answer
    x = 29,085.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.