Home / 15,374.43-21,217.14-9,405.99

Finding the Fourth Proportional to 15,374.43, 21,217.14 and 9,405.99

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Solution

The fourth proportional to 15,374.43, 21,217.14 and 9,405.99 is: 12,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.43 : 21,217.14 = 9,405.99 : x
  2. Step 2: Convert to fraction form
    15,374.43/21,217.14 = 9,405.99/x
  3. Step 3: Cross multiply
    15,374.43x = 21,217.14 × 9,405.99
  4. Step 4: Simplify right side
    15,374.43x = 199,568,206.67
  5. Step 5: Solve for x
    x = 199,568,206.67/15,374.43
  6. Step 6: Final answer
    x = 12,980.53

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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.