Home / 14,789.39-20,408.78-8,075.30

Finding the Fourth Proportional to 14,789.39, 20,408.78 and 8,075.30

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Solution

The fourth proportional to 14,789.39, 20,408.78 and 8,075.30 is: 11,143.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.39 : 20,408.78 = 8,075.30 : x
  2. Step 2: Convert to fraction form
    14,789.39/20,408.78 = 8,075.30/x
  3. Step 3: Cross multiply
    14,789.39x = 20,408.78 × 8,075.30
  4. Step 4: Simplify right side
    14,789.39x = 164,806,980.76
  5. Step 5: Solve for x
    x = 164,806,980.76/14,789.39
  6. Step 6: Final answer
    x = 11,143.60

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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.