Home / 15,629.71-21,537.06-11,143.93

Finding the Fourth Proportional to 15,629.71, 21,537.06 and 11,143.93

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Solution

The fourth proportional to 15,629.71, 21,537.06 and 11,143.93 is: 15,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.71 : 21,537.06 = 11,143.93 : x
  2. Step 2: Convert to fraction form
    15,629.71/21,537.06 = 11,143.93/x
  3. Step 3: Cross multiply
    15,629.71x = 21,537.06 × 11,143.93
  4. Step 4: Simplify right side
    15,629.71x = 240,007,489.05
  5. Step 5: Solve for x
    x = 240,007,489.05/15,629.71
  6. Step 6: Final answer
    x = 15,355.85

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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.