Home / 14,117.12-21,202.01-12,429.11

Finding the Fourth Proportional to 14,117.12, 21,202.01 and 12,429.11

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Solution

The fourth proportional to 14,117.12, 21,202.01 and 12,429.11 is: 18,666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,117.12 : 21,202.01 = 12,429.11 : x
  2. Step 2: Convert to fraction form
    14,117.12/21,202.01 = 12,429.11/x
  3. Step 3: Cross multiply
    14,117.12x = 21,202.01 × 12,429.11
  4. Step 4: Simplify right side
    14,117.12x = 263,522,205.44
  5. Step 5: Solve for x
    x = 263,522,205.44/14,117.12
  6. Step 6: Final answer
    x = 18,666.85

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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.