Home / 20,899.59-31,349.27-7,400.77

Finding the Fourth Proportional to 20,899.59, 31,349.27 and 7,400.77

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Solution

The fourth proportional to 20,899.59, 31,349.27 and 7,400.77 is: 11,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.59 : 31,349.27 = 7,400.77 : x
  2. Step 2: Convert to fraction form
    20,899.59/31,349.27 = 7,400.77/x
  3. Step 3: Cross multiply
    20,899.59x = 31,349.27 × 7,400.77
  4. Step 4: Simplify right side
    20,899.59x = 232,008,736.94
  5. Step 5: Solve for x
    x = 232,008,736.94/20,899.59
  6. Step 6: Final answer
    x = 11,101.11

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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.