Home / 15,363.88-21,203.76-9,399.52

Finding the Fourth Proportional to 15,363.88, 21,203.76 and 9,399.52

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Solution

The fourth proportional to 15,363.88, 21,203.76 and 9,399.52 is: 12,972.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.88 : 21,203.76 = 9,399.52 : x
  2. Step 2: Convert to fraction form
    15,363.88/21,203.76 = 9,399.52/x
  3. Step 3: Cross multiply
    15,363.88x = 21,203.76 × 9,399.52
  4. Step 4: Simplify right side
    15,363.88x = 199,305,166.20
  5. Step 5: Solve for x
    x = 199,305,166.20/15,363.88
  6. Step 6: Final answer
    x = 12,972.32

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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.