Home / 14,265.21-19,684.85-7,891.65

Finding the Fourth Proportional to 14,265.21, 19,684.85 and 7,891.65

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Solution

The fourth proportional to 14,265.21, 19,684.85 and 7,891.65 is: 10,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,265.21 : 19,684.85 = 7,891.65 : x
  2. Step 2: Convert to fraction form
    14,265.21/19,684.85 = 7,891.65/x
  3. Step 3: Cross multiply
    14,265.21x = 19,684.85 × 7,891.65
  4. Step 4: Simplify right side
    14,265.21x = 155,345,984.60
  5. Step 5: Solve for x
    x = 155,345,984.60/14,265.21
  6. Step 6: Final answer
    x = 10,889.85

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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.