Home / 15,815.07-21,824.79-9,528.66

Finding the Fourth Proportional to 15,815.07, 21,824.79 and 9,528.66

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Solution

The fourth proportional to 15,815.07, 21,824.79 and 9,528.66 is: 13,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.07 : 21,824.79 = 9,528.66 : x
  2. Step 2: Convert to fraction form
    15,815.07/21,824.79 = 9,528.66/x
  3. Step 3: Cross multiply
    15,815.07x = 21,824.79 × 9,528.66
  4. Step 4: Simplify right side
    15,815.07x = 207,961,003.48
  5. Step 5: Solve for x
    x = 207,961,003.48/15,815.07
  6. Step 6: Final answer
    x = 13,149.55

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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.