Home / 9,919.68-13,688.52-5,727.84

Finding the Fourth Proportional to 9,919.68, 13,688.52 and 5,727.84

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Solution

The fourth proportional to 9,919.68, 13,688.52 and 5,727.84 is: 7,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.68 : 13,688.52 = 5,727.84 : x
  2. Step 2: Convert to fraction form
    9,919.68/13,688.52 = 5,727.84/x
  3. Step 3: Cross multiply
    9,919.68x = 13,688.52 × 5,727.84
  4. Step 4: Simplify right side
    9,919.68x = 78,405,652.40
  5. Step 5: Solve for x
    x = 78,405,652.40/9,919.68
  6. Step 6: Final answer
    x = 7,904.05

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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.