Home / 13,203.52-18,221.28-7,235.56

Finding the Fourth Proportional to 13,203.52, 18,221.28 and 7,235.56

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Solution

The fourth proportional to 13,203.52, 18,221.28 and 7,235.56 is: 9,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.52 : 18,221.28 = 7,235.56 : x
  2. Step 2: Convert to fraction form
    13,203.52/18,221.28 = 7,235.56/x
  3. Step 3: Cross multiply
    13,203.52x = 18,221.28 × 7,235.56
  4. Step 4: Simplify right side
    13,203.52x = 131,841,160.36
  5. Step 5: Solve for x
    x = 131,841,160.36/13,203.52
  6. Step 6: Final answer
    x = 9,985.31

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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.