Home / 15,669.28-21,625.16-8,955.87

Finding the Fourth Proportional to 15,669.28, 21,625.16 and 8,955.87

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Solution

The fourth proportional to 15,669.28, 21,625.16 and 8,955.87 is: 12,359.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,669.28 : 21,625.16 = 8,955.87 : x
  2. Step 2: Convert to fraction form
    15,669.28/21,625.16 = 8,955.87/x
  3. Step 3: Cross multiply
    15,669.28x = 21,625.16 × 8,955.87
  4. Step 4: Simplify right side
    15,669.28x = 193,672,121.69
  5. Step 5: Solve for x
    x = 193,672,121.69/15,669.28
  6. Step 6: Final answer
    x = 12,359.99

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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.