Home / 11,228.64-15,486.42-9,881.36

Finding the Fourth Proportional to 11,228.64, 15,486.42 and 9,881.36

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Solution

The fourth proportional to 11,228.64, 15,486.42 and 9,881.36 is: 13,628.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,228.64 : 15,486.42 = 9,881.36 : x
  2. Step 2: Convert to fraction form
    11,228.64/15,486.42 = 9,881.36/x
  3. Step 3: Cross multiply
    11,228.64x = 15,486.42 × 9,881.36
  4. Step 4: Simplify right side
    11,228.64x = 153,026,891.13
  5. Step 5: Solve for x
    x = 153,026,891.13/11,228.64
  6. Step 6: Final answer
    x = 13,628.27

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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.