Home / 13,888.11-19,145.65-9,902.31

Finding the Fourth Proportional to 13,888.11, 19,145.65 and 9,902.31

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Solution

The fourth proportional to 13,888.11, 19,145.65 and 9,902.31 is: 13,650.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.11 : 19,145.65 = 9,902.31 : x
  2. Step 2: Convert to fraction form
    13,888.11/19,145.65 = 9,902.31/x
  3. Step 3: Cross multiply
    13,888.11x = 19,145.65 × 9,902.31
  4. Step 4: Simplify right side
    13,888.11x = 189,586,161.45
  5. Step 5: Solve for x
    x = 189,586,161.45/13,888.11
  6. Step 6: Final answer
    x = 13,650.97

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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.