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Finding the Fourth Proportional to 14,780.00, 20,396.10 and 8,065.61

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Solution

The fourth proportional to 14,780.00, 20,396.10 and 8,065.61 is: 11,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.00 : 20,396.10 = 8,065.61 : x
  2. Step 2: Convert to fraction form
    14,780.00/20,396.10 = 8,065.61/x
  3. Step 3: Cross multiply
    14,780.00x = 20,396.10 × 8,065.61
  4. Step 4: Simplify right side
    14,780.00x = 164,506,992.87
  5. Step 5: Solve for x
    x = 164,506,992.87/14,780.00
  6. Step 6: Final answer
    x = 11,130.38

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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.