Home / 13,888.29-19,145.88-9,902.49

Finding the Fourth Proportional to 13,888.29, 19,145.88 and 9,902.49

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Solution

The fourth proportional to 13,888.29, 19,145.88 and 9,902.49 is: 13,651.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.29 : 19,145.88 = 9,902.49 : x
  2. Step 2: Convert to fraction form
    13,888.29/19,145.88 = 9,902.49/x
  3. Step 3: Cross multiply
    13,888.29x = 19,145.88 × 9,902.49
  4. Step 4: Simplify right side
    13,888.29x = 189,591,885.24
  5. Step 5: Solve for x
    x = 189,591,885.24/13,888.29
  6. Step 6: Final answer
    x = 13,651.20

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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.