Home / 15,320-21,150.24-11,587.52

Finding the Fourth Proportional to 15,320, 21,150.24 and 11,587.52

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Solution

The fourth proportional to 15,320, 21,150.24 and 11,587.52 is: 15,997.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320 : 21,150.24 = 11,587.52 : x
  2. Step 2: Convert to fraction form
    15,320/21,150.24 = 11,587.52/x
  3. Step 3: Cross multiply
    15,320x = 21,150.24 × 11,587.52
  4. Step 4: Simplify right side
    15,320x = 245,078,829.00
  5. Step 5: Solve for x
    x = 245,078,829.00/15,320
  6. Step 6: Final answer
    x = 15,997.31

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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.