Home / 21,309.39-31,973.30-11,437.13

Finding the Fourth Proportional to 21,309.39, 31,973.30 and 11,437.13

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Solution

The fourth proportional to 21,309.39, 31,973.30 and 11,437.13 is: 17,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.39 : 31,973.30 = 11,437.13 : x
  2. Step 2: Convert to fraction form
    21,309.39/31,973.30 = 11,437.13/x
  3. Step 3: Cross multiply
    21,309.39x = 31,973.30 × 11,437.13
  4. Step 4: Simplify right side
    21,309.39x = 365,682,571.58
  5. Step 5: Solve for x
    x = 365,682,571.58/21,309.39
  6. Step 6: Final answer
    x = 17,160.63

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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.