Home / 11,066.40-15,270.51-6,816.78

Finding the Fourth Proportional to 11,066.40, 15,270.51 and 6,816.78

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Solution

The fourth proportional to 11,066.40, 15,270.51 and 6,816.78 is: 9,406.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,066.40 : 15,270.51 = 6,816.78 : x
  2. Step 2: Convert to fraction form
    11,066.40/15,270.51 = 6,816.78/x
  3. Step 3: Cross multiply
    11,066.40x = 15,270.51 × 6,816.78
  4. Step 4: Simplify right side
    11,066.40x = 104,095,707.16
  5. Step 5: Solve for x
    x = 104,095,707.16/11,066.40
  6. Step 6: Final answer
    x = 9,406.47

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Half scale
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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.