Home / 20,675.99-31,019.19-6,637.28

Finding the Fourth Proportional to 20,675.99, 31,019.19 and 6,637.28

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Solution

The fourth proportional to 20,675.99, 31,019.19 and 6,637.28 is: 9,957.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.99 : 31,019.19 = 6,637.28 : x
  2. Step 2: Convert to fraction form
    20,675.99/31,019.19 = 6,637.28/x
  3. Step 3: Cross multiply
    20,675.99x = 31,019.19 × 6,637.28
  4. Step 4: Simplify right side
    20,675.99x = 205,882,869.42
  5. Step 5: Solve for x
    x = 205,882,869.42/20,675.99
  6. Step 6: Final answer
    x = 9,957.58

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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.