Home / 11,219.03-15,479.53-7,645.76

Finding the Fourth Proportional to 11,219.03, 15,479.53 and 7,645.76

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Solution

The fourth proportional to 11,219.03, 15,479.53 and 7,645.76 is: 10,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.03 : 15,479.53 = 7,645.76 : x
  2. Step 2: Convert to fraction form
    11,219.03/15,479.53 = 7,645.76/x
  3. Step 3: Cross multiply
    11,219.03x = 15,479.53 × 7,645.76
  4. Step 4: Simplify right side
    11,219.03x = 118,352,771.29
  5. Step 5: Solve for x
    x = 118,352,771.29/11,219.03
  6. Step 6: Final answer
    x = 10,549.29

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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.