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Finding the Fourth Proportional to 14,064.82, 21,085.08 and 6,665.50

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Solution

The fourth proportional to 14,064.82, 21,085.08 and 6,665.50 is: 9,992.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,064.82 : 21,085.08 = 6,665.50 : x
  2. Step 2: Convert to fraction form
    14,064.82/21,085.08 = 6,665.50/x
  3. Step 3: Cross multiply
    14,064.82x = 21,085.08 × 6,665.50
  4. Step 4: Simplify right side
    14,064.82x = 140,542,600.74
  5. Step 5: Solve for x
    x = 140,542,600.74/14,064.82
  6. Step 6: Final answer
    x = 9,992.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.