Home / 15,355.58-21,184.13-11,109.15

Finding the Fourth Proportional to 15,355.58, 21,184.13 and 11,109.15

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Solution

The fourth proportional to 15,355.58, 21,184.13 and 11,109.15 is: 15,325.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.58 : 21,184.13 = 11,109.15 : x
  2. Step 2: Convert to fraction form
    15,355.58/21,184.13 = 11,109.15/x
  3. Step 3: Cross multiply
    15,355.58x = 21,184.13 × 11,109.15
  4. Step 4: Simplify right side
    15,355.58x = 235,337,705.56
  5. Step 5: Solve for x
    x = 235,337,705.56/15,355.58
  6. Step 6: Final answer
    x = 15,325.88

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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.