Home / 14,780.34-20,396.88-8,065.80

Finding the Fourth Proportional to 14,780.34, 20,396.88 and 8,065.80

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Solution

The fourth proportional to 14,780.34, 20,396.88 and 8,065.80 is: 11,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.34 : 20,396.88 = 8,065.80 : x
  2. Step 2: Convert to fraction form
    14,780.34/20,396.88 = 8,065.80/x
  3. Step 3: Cross multiply
    14,780.34x = 20,396.88 × 8,065.80
  4. Step 4: Simplify right side
    14,780.34x = 164,517,154.70
  5. Step 5: Solve for x
    x = 164,517,154.70/14,780.34
  6. Step 6: Final answer
    x = 11,130.81

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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.