Home / 11,120.19-15,346.98-6,643.32

Finding the Fourth Proportional to 11,120.19, 15,346.98 and 6,643.32

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Solution

The fourth proportional to 11,120.19, 15,346.98 and 6,643.32 is: 9,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.19 : 15,346.98 = 6,643.32 : x
  2. Step 2: Convert to fraction form
    11,120.19/15,346.98 = 6,643.32/x
  3. Step 3: Cross multiply
    11,120.19x = 15,346.98 × 6,643.32
  4. Step 4: Simplify right side
    11,120.19x = 101,954,899.17
  5. Step 5: Solve for x
    x = 101,954,899.17/11,120.19
  6. Step 6: Final answer
    x = 9,168.45

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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.