Home / 10,620.61-14,634.85-8,215.98

Finding the Fourth Proportional to 10,620.61, 14,634.85 and 8,215.98

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Solution

The fourth proportional to 10,620.61, 14,634.85 and 8,215.98 is: 11,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.61 : 14,634.85 = 8,215.98 : x
  2. Step 2: Convert to fraction form
    10,620.61/14,634.85 = 8,215.98/x
  3. Step 3: Cross multiply
    10,620.61x = 14,634.85 × 8,215.98
  4. Step 4: Simplify right side
    10,620.61x = 120,239,593.82
  5. Step 5: Solve for x
    x = 120,239,593.82/10,620.61
  6. Step 6: Final answer
    x = 11,321.35

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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.