Home / 11,209.79-15,455.81-7,010.75

Finding the Fourth Proportional to 11,209.79, 15,455.81 and 7,010.75

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Solution

The fourth proportional to 11,209.79, 15,455.81 and 7,010.75 is: 9,666.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.79 : 15,455.81 = 7,010.75 : x
  2. Step 2: Convert to fraction form
    11,209.79/15,455.81 = 7,010.75/x
  3. Step 3: Cross multiply
    11,209.79x = 15,455.81 × 7,010.75
  4. Step 4: Simplify right side
    11,209.79x = 108,356,784.90
  5. Step 5: Solve for x
    x = 108,356,784.90/11,209.79
  6. Step 6: Final answer
    x = 9,666.26

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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.