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Finding the Fourth Proportional to 14,710.71, 20,281.28 and 12,183.51

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Solution

The fourth proportional to 14,710.71, 20,281.28 and 12,183.51 is: 16,797.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,710.71 : 20,281.28 = 12,183.51 : x
  2. Step 2: Convert to fraction form
    14,710.71/20,281.28 = 12,183.51/x
  3. Step 3: Cross multiply
    14,710.71x = 20,281.28 × 12,183.51
  4. Step 4: Simplify right side
    14,710.71x = 247,097,116.78
  5. Step 5: Solve for x
    x = 247,097,116.78/14,710.71
  6. Step 6: Final answer
    x = 16,797.09

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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.