Home / 15,563.24-21,476.88-8,489.64

Finding the Fourth Proportional to 15,563.24, 21,476.88 and 8,489.64

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Solution

The fourth proportional to 15,563.24, 21,476.88 and 8,489.64 is: 11,715.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,563.24 : 21,476.88 = 8,489.64 : x
  2. Step 2: Convert to fraction form
    15,563.24/21,476.88 = 8,489.64/x
  3. Step 3: Cross multiply
    15,563.24x = 21,476.88 × 8,489.64
  4. Step 4: Simplify right side
    15,563.24x = 182,330,979.52
  5. Step 5: Solve for x
    x = 182,330,979.52/15,563.24
  6. Step 6: Final answer
    x = 11,715.49

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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.