Home / 15,344.40-21,165.60-9,674.40

Finding the Fourth Proportional to 15,344.40, 21,165.60 and 9,674.40

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Solution

The fourth proportional to 15,344.40, 21,165.60 and 9,674.40 is: 13,344.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.40 : 21,165.60 = 9,674.40 : x
  2. Step 2: Convert to fraction form
    15,344.40/21,165.60 = 9,674.40/x
  3. Step 3: Cross multiply
    15,344.40x = 21,165.60 × 9,674.40
  4. Step 4: Simplify right side
    15,344.40x = 204,764,480.64
  5. Step 5: Solve for x
    x = 204,764,480.64/15,344.40
  6. Step 6: Final answer
    x = 13,344.57

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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.