Home / 9,415.68-12,993.60-5,436.48

Finding the Fourth Proportional to 9,415.68, 12,993.60 and 5,436.48

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Solution

The fourth proportional to 9,415.68, 12,993.60 and 5,436.48 is: 7,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.68 : 12,993.60 = 5,436.48 : x
  2. Step 2: Convert to fraction form
    9,415.68/12,993.60 = 5,436.48/x
  3. Step 3: Cross multiply
    9,415.68x = 12,993.60 × 5,436.48
  4. Step 4: Simplify right side
    9,415.68x = 70,639,446.53
  5. Step 5: Solve for x
    x = 70,639,446.53/9,415.68
  6. Step 6: Final answer
    x = 7,502.32

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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.