Home / 15,318-21,147.48-11,585.52

Finding the Fourth Proportional to 15,318, 21,147.48 and 11,585.52

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Solution

The fourth proportional to 15,318, 21,147.48 and 11,585.52 is: 15,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318 : 21,147.48 = 11,585.52 : x
  2. Step 2: Convert to fraction form
    15,318/21,147.48 = 11,585.52/x
  3. Step 3: Cross multiply
    15,318x = 21,147.48 × 11,585.52
  4. Step 4: Simplify right side
    15,318x = 245,004,552.49
  5. Step 5: Solve for x
    x = 245,004,552.49/15,318
  6. Step 6: Final answer
    x = 15,994.55

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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.