Home / 21,309.90-31,964.80-5,727.53

Finding the Fourth Proportional to 21,309.90, 31,964.80 and 5,727.53

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Solution

The fourth proportional to 21,309.90, 31,964.80 and 5,727.53 is: 8,591.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.90 : 31,964.80 = 5,727.53 : x
  2. Step 2: Convert to fraction form
    21,309.90/31,964.80 = 5,727.53/x
  3. Step 3: Cross multiply
    21,309.90x = 31,964.80 × 5,727.53
  4. Step 4: Simplify right side
    21,309.90x = 183,079,350.94
  5. Step 5: Solve for x
    x = 183,079,350.94/21,309.90
  6. Step 6: Final answer
    x = 8,591.28

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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.