Home / 9,728.19-13,406.18-7,071.39

Finding the Fourth Proportional to 9,728.19, 13,406.18 and 7,071.39

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Solution

The fourth proportional to 9,728.19, 13,406.18 and 7,071.39 is: 9,744.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,728.19 : 13,406.18 = 7,071.39 : x
  2. Step 2: Convert to fraction form
    9,728.19/13,406.18 = 7,071.39/x
  3. Step 3: Cross multiply
    9,728.19x = 13,406.18 × 7,071.39
  4. Step 4: Simplify right side
    9,728.19x = 94,800,291.83
  5. Step 5: Solve for x
    x = 94,800,291.83/9,728.19
  6. Step 6: Final answer
    x = 9,744.91

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Half scale
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Double scale
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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.