Home / 12,388.33-18,587.96-5,007.21

Finding the Fourth Proportional to 12,388.33, 18,587.96 and 5,007.21

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Solution

The fourth proportional to 12,388.33, 18,587.96 and 5,007.21 is: 7,513.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.33 : 18,587.96 = 5,007.21 : x
  2. Step 2: Convert to fraction form
    12,388.33/18,587.96 = 5,007.21/x
  3. Step 3: Cross multiply
    12,388.33x = 18,587.96 × 5,007.21
  4. Step 4: Simplify right side
    12,388.33x = 93,073,819.19
  5. Step 5: Solve for x
    x = 93,073,819.19/12,388.33
  6. Step 6: Final answer
    x = 7,513.02

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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.