Home / 13,890.73-19,149.28-9,904.93

Finding the Fourth Proportional to 13,890.73, 19,149.28 and 9,904.93

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Solution

The fourth proportional to 13,890.73, 19,149.28 and 9,904.93 is: 13,654.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.73 : 19,149.28 = 9,904.93 : x
  2. Step 2: Convert to fraction form
    13,890.73/19,149.28 = 9,904.93/x
  3. Step 3: Cross multiply
    13,890.73x = 19,149.28 × 9,904.93
  4. Step 4: Simplify right side
    13,890.73x = 189,672,277.95
  5. Step 5: Solve for x
    x = 189,672,277.95/13,890.73
  6. Step 6: Final answer
    x = 13,654.59

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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.