Home / 20,681.28-31,021.84-6,089.28

Finding the Fourth Proportional to 20,681.28, 31,021.84 and 6,089.28

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Solution

The fourth proportional to 20,681.28, 31,021.84 and 6,089.28 is: 9,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.28 : 31,021.84 = 6,089.28 : x
  2. Step 2: Convert to fraction form
    20,681.28/31,021.84 = 6,089.28/x
  3. Step 3: Cross multiply
    20,681.28x = 31,021.84 × 6,089.28
  4. Step 4: Simplify right side
    20,681.28x = 188,900,669.88
  5. Step 5: Solve for x
    x = 188,900,669.88/20,681.28
  6. Step 6: Final answer
    x = 9,133.90

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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.