Home / 15,563.25-21,477.29-8,489.70

Finding the Fourth Proportional to 15,563.25, 21,477.29 and 8,489.70

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Solution

The fourth proportional to 15,563.25, 21,477.29 and 8,489.70 is: 11,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,563.25 : 21,477.29 = 8,489.70 : x
  2. Step 2: Convert to fraction form
    15,563.25/21,477.29 = 8,489.70/x
  3. Step 3: Cross multiply
    15,563.25x = 21,477.29 × 8,489.70
  4. Step 4: Simplify right side
    15,563.25x = 182,335,706.46
  5. Step 5: Solve for x
    x = 182,335,706.46/15,563.25
  6. Step 6: Final answer
    x = 11,715.79

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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.