Home / 15,695.43-21,659.70-8,622.30

Finding the Fourth Proportional to 15,695.43, 21,659.70 and 8,622.30

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Solution

The fourth proportional to 15,695.43, 21,659.70 and 8,622.30 is: 11,898.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.43 : 21,659.70 = 8,622.30 : x
  2. Step 2: Convert to fraction form
    15,695.43/21,659.70 = 8,622.30/x
  3. Step 3: Cross multiply
    15,695.43x = 21,659.70 × 8,622.30
  4. Step 4: Simplify right side
    15,695.43x = 186,756,431.31
  5. Step 5: Solve for x
    x = 186,756,431.31/15,695.43
  6. Step 6: Final answer
    x = 11,898.78

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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.