Home / 12,209.34-18,316.40-5,189.28

Finding the Fourth Proportional to 12,209.34, 18,316.40 and 5,189.28

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Solution

The fourth proportional to 12,209.34, 18,316.40 and 5,189.28 is: 7,784.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.34 : 18,316.40 = 5,189.28 : x
  2. Step 2: Convert to fraction form
    12,209.34/18,316.40 = 5,189.28/x
  3. Step 3: Cross multiply
    12,209.34x = 18,316.40 × 5,189.28
  4. Step 4: Simplify right side
    12,209.34x = 95,048,833.56
  5. Step 5: Solve for x
    x = 95,048,833.56/12,209.34
  6. Step 6: Final answer
    x = 7,784.93

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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.