Home / 21,243.18-31,865.38-7,203.25

Finding the Fourth Proportional to 21,243.18, 31,865.38 and 7,203.25

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Solution

The fourth proportional to 21,243.18, 31,865.38 and 7,203.25 is: 10,805.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.18 : 31,865.38 = 7,203.25 : x
  2. Step 2: Convert to fraction form
    21,243.18/31,865.38 = 7,203.25/x
  3. Step 3: Cross multiply
    21,243.18x = 31,865.38 × 7,203.25
  4. Step 4: Simplify right side
    21,243.18x = 229,534,298.49
  5. Step 5: Solve for x
    x = 229,534,298.49/21,243.18
  6. Step 6: Final answer
    x = 10,805.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.