Home / 14,780.14-20,396.78-8,065.74

Finding the Fourth Proportional to 14,780.14, 20,396.78 and 8,065.74

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Solution

The fourth proportional to 14,780.14, 20,396.78 and 8,065.74 is: 11,130.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.14 : 20,396.78 = 8,065.74 : x
  2. Step 2: Convert to fraction form
    14,780.14/20,396.78 = 8,065.74/x
  3. Step 3: Cross multiply
    14,780.14x = 20,396.78 × 8,065.74
  4. Step 4: Simplify right side
    14,780.14x = 164,515,124.32
  5. Step 5: Solve for x
    x = 164,515,124.32/14,780.14
  6. Step 6: Final answer
    x = 11,130.82

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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.