Home / 11,005.29-15,169.55-9,012.33

Finding the Fourth Proportional to 11,005.29, 15,169.55 and 9,012.33

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Solution

The fourth proportional to 11,005.29, 15,169.55 and 9,012.33 is: 12,422.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.29 : 15,169.55 = 9,012.33 : x
  2. Step 2: Convert to fraction form
    11,005.29/15,169.55 = 9,012.33/x
  3. Step 3: Cross multiply
    11,005.29x = 15,169.55 × 9,012.33
  4. Step 4: Simplify right side
    11,005.29x = 136,712,945.49
  5. Step 5: Solve for x
    x = 136,712,945.49/11,005.29
  6. Step 6: Final answer
    x = 12,422.48

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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.