Home / 21,188.04-31,791.78-10,807.08

Finding the Fourth Proportional to 21,188.04, 31,791.78 and 10,807.08

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Solution

The fourth proportional to 21,188.04, 31,791.78 and 10,807.08 is: 16,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.04 : 31,791.78 = 10,807.08 : x
  2. Step 2: Convert to fraction form
    21,188.04/31,791.78 = 10,807.08/x
  3. Step 3: Cross multiply
    21,188.04x = 31,791.78 × 10,807.08
  4. Step 4: Simplify right side
    21,188.04x = 343,576,309.80
  5. Step 5: Solve for x
    x = 343,576,309.80/21,188.04
  6. Step 6: Final answer
    x = 16,215.58

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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.