Home / 15,218.26-21,003.29-8,757.77

Finding the Fourth Proportional to 15,218.26, 21,003.29 and 8,757.77

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Solution

The fourth proportional to 15,218.26, 21,003.29 and 8,757.77 is: 12,086.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.26 : 21,003.29 = 8,757.77 : x
  2. Step 2: Convert to fraction form
    15,218.26/21,003.29 = 8,757.77/x
  3. Step 3: Cross multiply
    15,218.26x = 21,003.29 × 8,757.77
  4. Step 4: Simplify right side
    15,218.26x = 183,941,893.35
  5. Step 5: Solve for x
    x = 183,941,893.35/15,218.26
  6. Step 6: Final answer
    x = 12,086.92

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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.