Home / 9,518.32-13,139.40-7,161.04

Finding the Fourth Proportional to 9,518.32, 13,139.40 and 7,161.04

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Solution

The fourth proportional to 9,518.32, 13,139.40 and 7,161.04 is: 9,885.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,518.32 : 13,139.40 = 7,161.04 : x
  2. Step 2: Convert to fraction form
    9,518.32/13,139.40 = 7,161.04/x
  3. Step 3: Cross multiply
    9,518.32x = 13,139.40 × 7,161.04
  4. Step 4: Simplify right side
    9,518.32x = 94,091,768.98
  5. Step 5: Solve for x
    x = 94,091,768.98/9,518.32
  6. Step 6: Final answer
    x = 9,885.33

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Double scale
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Similar ratio
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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.