Home / 10,911.36-15,066.56-8,895.09

Finding the Fourth Proportional to 10,911.36, 15,066.56 and 8,895.09

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Solution

The fourth proportional to 10,911.36, 15,066.56 and 8,895.09 is: 12,282.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.36 : 15,066.56 = 8,895.09 : x
  2. Step 2: Convert to fraction form
    10,911.36/15,066.56 = 8,895.09/x
  3. Step 3: Cross multiply
    10,911.36x = 15,066.56 × 8,895.09
  4. Step 4: Simplify right side
    10,911.36x = 134,018,407.19
  5. Step 5: Solve for x
    x = 134,018,407.19/10,911.36
  6. Step 6: Final answer
    x = 12,282.47

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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.