Home / 15,717.73-21,684.31-8,999.74

Finding the Fourth Proportional to 15,717.73, 21,684.31 and 8,999.74

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Solution

The fourth proportional to 15,717.73, 21,684.31 and 8,999.74 is: 12,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717.73 : 21,684.31 = 8,999.74 : x
  2. Step 2: Convert to fraction form
    15,717.73/21,684.31 = 8,999.74/x
  3. Step 3: Cross multiply
    15,717.73x = 21,684.31 × 8,999.74
  4. Step 4: Simplify right side
    15,717.73x = 195,153,207.31
  5. Step 5: Solve for x
    x = 195,153,207.31/15,717.73
  6. Step 6: Final answer
    x = 12,416.12

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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.