Home / 15,682.72-21,641.52-9,398.56

Finding the Fourth Proportional to 15,682.72, 21,641.52 and 9,398.56

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Solution

The fourth proportional to 15,682.72, 21,641.52 and 9,398.56 is: 12,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,682.72 : 21,641.52 = 9,398.56 : x
  2. Step 2: Convert to fraction form
    15,682.72/21,641.52 = 9,398.56/x
  3. Step 3: Cross multiply
    15,682.72x = 21,641.52 × 9,398.56
  4. Step 4: Simplify right side
    15,682.72x = 203,399,124.21
  5. Step 5: Solve for x
    x = 203,399,124.21/15,682.72
  6. Step 6: Final answer
    x = 12,969.63

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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.