Home / 20,901.92-31,355.00-6,111.11

Finding the Fourth Proportional to 20,901.92, 31,355.00 and 6,111.11

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Solution

The fourth proportional to 20,901.92, 31,355.00 and 6,111.11 is: 9,167.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.92 : 31,355.00 = 6,111.11 : x
  2. Step 2: Convert to fraction form
    20,901.92/31,355.00 = 6,111.11/x
  3. Step 3: Cross multiply
    20,901.92x = 31,355.00 × 6,111.11
  4. Step 4: Simplify right side
    20,901.92x = 191,613,666.72
  5. Step 5: Solve for x
    x = 191,613,666.72/20,901.92
  6. Step 6: Final answer
    x = 9,167.28

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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.