Home / 21,158.12-31,730.78-6,363.11

Finding the Fourth Proportional to 21,158.12, 31,730.78 and 6,363.11

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Solution

The fourth proportional to 21,158.12, 31,730.78 and 6,363.11 is: 9,542.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.12 : 31,730.78 = 6,363.11 : x
  2. Step 2: Convert to fraction form
    21,158.12/31,730.78 = 6,363.11/x
  3. Step 3: Cross multiply
    21,158.12x = 31,730.78 × 6,363.11
  4. Step 4: Simplify right side
    21,158.12x = 201,906,253.06
  5. Step 5: Solve for x
    x = 201,906,253.06/21,158.12
  6. Step 6: Final answer
    x = 9,542.73

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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.