Home / 20,715.20-31,073.88-5,926.30

Finding the Fourth Proportional to 20,715.20, 31,073.88 and 5,926.30

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Solution

The fourth proportional to 20,715.20, 31,073.88 and 5,926.30 is: 8,889.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.20 : 31,073.88 = 5,926.30 : x
  2. Step 2: Convert to fraction form
    20,715.20/31,073.88 = 5,926.30/x
  3. Step 3: Cross multiply
    20,715.20x = 31,073.88 × 5,926.30
  4. Step 4: Simplify right side
    20,715.20x = 184,152,979.67
  5. Step 5: Solve for x
    x = 184,152,979.67/20,715.20
  6. Step 6: Final answer
    x = 8,889.75

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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.