Home / 15,500.26-21,390.38-8,426.68

Finding the Fourth Proportional to 15,500.26, 21,390.38 and 8,426.68

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Solution

The fourth proportional to 15,500.26, 21,390.38 and 8,426.68 is: 11,628.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.26 : 21,390.38 = 8,426.68 : x
  2. Step 2: Convert to fraction form
    15,500.26/21,390.38 = 8,426.68/x
  3. Step 3: Cross multiply
    15,500.26x = 21,390.38 × 8,426.68
  4. Step 4: Simplify right side
    15,500.26x = 180,249,943.65
  5. Step 5: Solve for x
    x = 180,249,943.65/15,500.26
  6. Step 6: Final answer
    x = 11,628.83

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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.