Home / 11,118.22-15,337.08-7,139.94

Finding the Fourth Proportional to 11,118.22, 15,337.08 and 7,139.94

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Solution

The fourth proportional to 11,118.22, 15,337.08 and 7,139.94 is: 9,849.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.22 : 15,337.08 = 7,139.94 : x
  2. Step 2: Convert to fraction form
    11,118.22/15,337.08 = 7,139.94/x
  3. Step 3: Cross multiply
    11,118.22x = 15,337.08 × 7,139.94
  4. Step 4: Simplify right side
    11,118.22x = 109,505,830.98
  5. Step 5: Solve for x
    x = 109,505,830.98/11,118.22
  6. Step 6: Final answer
    x = 9,849.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.