Home / 15,807.24-21,801.69-11,205.90

Finding the Fourth Proportional to 15,807.24, 21,801.69 and 11,205.90

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Solution

The fourth proportional to 15,807.24, 21,801.69 and 11,205.90 is: 15,455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.24 : 21,801.69 = 11,205.90 : x
  2. Step 2: Convert to fraction form
    15,807.24/21,801.69 = 11,205.90/x
  3. Step 3: Cross multiply
    15,807.24x = 21,801.69 × 11,205.90
  4. Step 4: Simplify right side
    15,807.24x = 244,307,557.97
  5. Step 5: Solve for x
    x = 244,307,557.97/15,807.24
  6. Step 6: Final answer
    x = 15,455.42

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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.