Home / 19,142.97-28,695.70-8,615.63

Finding the Fourth Proportional to 19,142.97, 28,695.70 and 8,615.63

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Solution

The fourth proportional to 19,142.97, 28,695.70 and 8,615.63 is: 12,915.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.97 : 28,695.70 = 8,615.63 : x
  2. Step 2: Convert to fraction form
    19,142.97/28,695.70 = 8,615.63/x
  3. Step 3: Cross multiply
    19,142.97x = 28,695.70 × 8,615.63
  4. Step 4: Simplify right side
    19,142.97x = 247,231,616.30
  5. Step 5: Solve for x
    x = 247,231,616.30/19,142.97
  6. Step 6: Final answer
    x = 12,915.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.