Home / 15,456.28-21,328.38-9,167.56

Finding the Fourth Proportional to 15,456.28, 21,328.38 and 9,167.56

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Solution

The fourth proportional to 15,456.28, 21,328.38 and 9,167.56 is: 12,650.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.28 : 21,328.38 = 9,167.56 : x
  2. Step 2: Convert to fraction form
    15,456.28/21,328.38 = 9,167.56/x
  3. Step 3: Cross multiply
    15,456.28x = 21,328.38 × 9,167.56
  4. Step 4: Simplify right side
    15,456.28x = 195,529,203.35
  5. Step 5: Solve for x
    x = 195,529,203.35/15,456.28
  6. Step 6: Final answer
    x = 12,650.47

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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.