Home / 15,338.68-21,167.99-8,969.38

Finding the Fourth Proportional to 15,338.68, 21,167.99 and 8,969.38

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Solution

The fourth proportional to 15,338.68, 21,167.99 and 8,969.38 is: 12,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.68 : 21,167.99 = 8,969.38 : x
  2. Step 2: Convert to fraction form
    15,338.68/21,167.99 = 8,969.38/x
  3. Step 3: Cross multiply
    15,338.68x = 21,167.99 × 8,969.38
  4. Step 4: Simplify right side
    15,338.68x = 189,863,746.15
  5. Step 5: Solve for x
    x = 189,863,746.15/15,338.68
  6. Step 6: Final answer
    x = 12,378.10

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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.