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Finding the Fourth Proportional to 14,206.60, 21,309.90 and 4,345.90

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Solution

The fourth proportional to 14,206.60, 21,309.90 and 4,345.90 is: 6,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,206.60 : 21,309.90 = 4,345.90 : x
  2. Step 2: Convert to fraction form
    14,206.60/21,309.90 = 4,345.90/x
  3. Step 3: Cross multiply
    14,206.60x = 21,309.90 × 4,345.90
  4. Step 4: Simplify right side
    14,206.60x = 92,610,694.41
  5. Step 5: Solve for x
    x = 92,610,694.41/14,206.60
  6. Step 6: Final answer
    x = 6,518.85

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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.