Home / 20,587.67-30,885.87-7,937.75

Finding the Fourth Proportional to 20,587.67, 30,885.87 and 7,937.75

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Solution

The fourth proportional to 20,587.67, 30,885.87 and 7,937.75 is: 11,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.67 : 30,885.87 = 7,937.75 : x
  2. Step 2: Convert to fraction form
    20,587.67/30,885.87 = 7,937.75/x
  3. Step 3: Cross multiply
    20,587.67x = 30,885.87 × 7,937.75
  4. Step 4: Simplify right side
    20,587.67x = 245,164,160.16
  5. Step 5: Solve for x
    x = 245,164,160.16/20,587.67
  6. Step 6: Final answer
    x = 11,908.30

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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.