Home / 15,496.35-21,385.11-8,422.77

Finding the Fourth Proportional to 15,496.35, 21,385.11 and 8,422.77

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Solution

The fourth proportional to 15,496.35, 21,385.11 and 8,422.77 is: 11,623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.35 : 21,385.11 = 8,422.77 : x
  2. Step 2: Convert to fraction form
    15,496.35/21,385.11 = 8,422.77/x
  3. Step 3: Cross multiply
    15,496.35x = 21,385.11 × 8,422.77
  4. Step 4: Simplify right side
    15,496.35x = 180,121,814.35
  5. Step 5: Solve for x
    x = 180,121,814.35/15,496.35
  6. Step 6: Final answer
    x = 11,623.50

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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.