Home / 11,128.19-15,354.36-6,651.18

Finding the Fourth Proportional to 11,128.19, 15,354.36 and 6,651.18

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Solution

The fourth proportional to 11,128.19, 15,354.36 and 6,651.18 is: 9,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.19 : 15,354.36 = 6,651.18 : x
  2. Step 2: Convert to fraction form
    11,128.19/15,354.36 = 6,651.18/x
  3. Step 3: Cross multiply
    11,128.19x = 15,354.36 × 6,651.18
  4. Step 4: Simplify right side
    11,128.19x = 102,124,612.14
  5. Step 5: Solve for x
    x = 102,124,612.14/11,128.19
  6. Step 6: Final answer
    x = 9,177.11

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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.