Home / 11,319.38-15,620.74-6,602.75

Finding the Fourth Proportional to 11,319.38, 15,620.74 and 6,602.75

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Solution

The fourth proportional to 11,319.38, 15,620.74 and 6,602.75 is: 9,111.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.38 : 15,620.74 = 6,602.75 : x
  2. Step 2: Convert to fraction form
    11,319.38/15,620.74 = 6,602.75/x
  3. Step 3: Cross multiply
    11,319.38x = 15,620.74 × 6,602.75
  4. Step 4: Simplify right side
    11,319.38x = 103,139,841.04
  5. Step 5: Solve for x
    x = 103,139,841.04/11,319.38
  6. Step 6: Final answer
    x = 9,111.79

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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.