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Finding the Fourth Proportional to 14,009.68, 21,014.52 and 3,479.68

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Solution

The fourth proportional to 14,009.68, 21,014.52 and 3,479.68 is: 5,219.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.68 : 21,014.52 = 3,479.68 : x
  2. Step 2: Convert to fraction form
    14,009.68/21,014.52 = 3,479.68/x
  3. Step 3: Cross multiply
    14,009.68x = 21,014.52 × 3,479.68
  4. Step 4: Simplify right side
    14,009.68x = 73,123,804.95
  5. Step 5: Solve for x
    x = 73,123,804.95/14,009.68
  6. Step 6: Final answer
    x = 5,219.52

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Half scale
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Similar ratio
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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.