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Finding the Fourth Proportional to 14,435.15, 19,926.41 and 9,129.11

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Solution

The fourth proportional to 14,435.15, 19,926.41 and 9,129.11 is: 12,601.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,435.15 : 19,926.41 = 9,129.11 : x
  2. Step 2: Convert to fraction form
    14,435.15/19,926.41 = 9,129.11/x
  3. Step 3: Cross multiply
    14,435.15x = 19,926.41 × 9,129.11
  4. Step 4: Simplify right side
    14,435.15x = 181,910,243.52
  5. Step 5: Solve for x
    x = 181,910,243.52/14,435.15
  6. Step 6: Final answer
    x = 12,601.90

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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.