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Finding the Fourth Proportional to 14,789.70, 20,410.05 and 8,075.39

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Solution

The fourth proportional to 14,789.70, 20,410.05 and 8,075.39 is: 11,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.70 : 20,410.05 = 8,075.39 : x
  2. Step 2: Convert to fraction form
    14,789.70/20,410.05 = 8,075.39/x
  3. Step 3: Cross multiply
    14,789.70x = 20,410.05 × 8,075.39
  4. Step 4: Simplify right side
    14,789.70x = 164,819,113.67
  5. Step 5: Solve for x
    x = 164,819,113.67/14,789.70
  6. Step 6: Final answer
    x = 11,144.18

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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.