Home / 12,287.36-18,431.04-5,357

Finding the Fourth Proportional to 12,287.36, 18,431.04 and 5,357

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Solution

The fourth proportional to 12,287.36, 18,431.04 and 5,357 is: 8,035.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.36 : 18,431.04 = 5,357 : x
  2. Step 2: Convert to fraction form
    12,287.36/18,431.04 = 5,357/x
  3. Step 3: Cross multiply
    12,287.36x = 18,431.04 × 5,357
  4. Step 4: Simplify right side
    12,287.36x = 98,735,081.28
  5. Step 5: Solve for x
    x = 98,735,081.28/12,287.36
  6. Step 6: Final answer
    x = 8,035.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.