Home / 20,881.89-31,319.60-6,089.27

Finding the Fourth Proportional to 20,881.89, 31,319.60 and 6,089.27

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Solution

The fourth proportional to 20,881.89, 31,319.60 and 6,089.27 is: 9,132.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.89 : 31,319.60 = 6,089.27 : x
  2. Step 2: Convert to fraction form
    20,881.89/31,319.60 = 6,089.27/x
  3. Step 3: Cross multiply
    20,881.89x = 31,319.60 × 6,089.27
  4. Step 4: Simplify right side
    20,881.89x = 190,713,313.65
  5. Step 5: Solve for x
    x = 190,713,313.65/20,881.89
  6. Step 6: Final answer
    x = 9,132.95

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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.