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Finding the Fourth Proportional to 15,196.66, 20,971.41 and 8,482.89

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Solution

The fourth proportional to 15,196.66, 20,971.41 and 8,482.89 is: 11,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196.66 : 20,971.41 = 8,482.89 : x
  2. Step 2: Convert to fraction form
    15,196.66/20,971.41 = 8,482.89/x
  3. Step 3: Cross multiply
    15,196.66x = 20,971.41 × 8,482.89
  4. Step 4: Simplify right side
    15,196.66x = 177,898,164.17
  5. Step 5: Solve for x
    x = 177,898,164.17/15,196.66
  6. Step 6: Final answer
    x = 11,706.40

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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.