Home / 13,203.71-18,221.01-7,235.36

Finding the Fourth Proportional to 13,203.71, 18,221.01 and 7,235.36

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Solution

The fourth proportional to 13,203.71, 18,221.01 and 7,235.36 is: 9,984.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.71 : 18,221.01 = 7,235.36 : x
  2. Step 2: Convert to fraction form
    13,203.71/18,221.01 = 7,235.36/x
  3. Step 3: Cross multiply
    13,203.71x = 18,221.01 × 7,235.36
  4. Step 4: Simplify right side
    13,203.71x = 131,835,644.75
  5. Step 5: Solve for x
    x = 131,835,644.75/13,203.71
  6. Step 6: Final answer
    x = 9,984.74

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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.