Home / 11,088.19-15,297.78-7,111.45

Finding the Fourth Proportional to 11,088.19, 15,297.78 and 7,111.45

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Solution

The fourth proportional to 11,088.19, 15,297.78 and 7,111.45 is: 9,811.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,088.19 : 15,297.78 = 7,111.45 : x
  2. Step 2: Convert to fraction form
    11,088.19/15,297.78 = 7,111.45/x
  3. Step 3: Cross multiply
    11,088.19x = 15,297.78 × 7,111.45
  4. Step 4: Simplify right side
    11,088.19x = 108,789,397.58
  5. Step 5: Solve for x
    x = 108,789,397.58/11,088.19
  6. Step 6: Final answer
    x = 9,811.29

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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.