Home / 15,561.79-23,319-11,404.55

Finding the Fourth Proportional to 15,561.79, 23,319 and 11,404.55

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Solution

The fourth proportional to 15,561.79, 23,319 and 11,404.55 is: 17,089.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.79 : 23,319 = 11,404.55 : x
  2. Step 2: Convert to fraction form
    15,561.79/23,319 = 11,404.55/x
  3. Step 3: Cross multiply
    15,561.79x = 23,319 × 11,404.55
  4. Step 4: Simplify right side
    15,561.79x = 265,942,759.75
  5. Step 5: Solve for x
    x = 265,942,759.75/15,561.79
  6. Step 6: Final answer
    x = 17,089.47

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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.