Home / 11,991.02-16,554.71-10,661.05

Finding the Fourth Proportional to 11,991.02, 16,554.71 and 10,661.05

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Solution

The fourth proportional to 11,991.02, 16,554.71 and 10,661.05 is: 14,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.02 : 16,554.71 = 10,661.05 : x
  2. Step 2: Convert to fraction form
    11,991.02/16,554.71 = 10,661.05/x
  3. Step 3: Cross multiply
    11,991.02x = 16,554.71 × 10,661.05
  4. Step 4: Simplify right side
    11,991.02x = 176,490,454.97
  5. Step 5: Solve for x
    x = 176,490,454.97/11,991.02
  6. Step 6: Final answer
    x = 14,718.55

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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.