Home / 15,310.64-21,128.00-8,596.15

Finding the Fourth Proportional to 15,310.64, 21,128.00 and 8,596.15

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Solution

The fourth proportional to 15,310.64, 21,128.00 and 8,596.15 is: 11,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.64 : 21,128.00 = 8,596.15 : x
  2. Step 2: Convert to fraction form
    15,310.64/21,128.00 = 8,596.15/x
  3. Step 3: Cross multiply
    15,310.64x = 21,128.00 × 8,596.15
  4. Step 4: Simplify right side
    15,310.64x = 181,619,425.87
  5. Step 5: Solve for x
    x = 181,619,425.87/15,310.64
  6. Step 6: Final answer
    x = 11,862.30

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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.