Home / 13,849.16-19,115.88-9,881.78

Finding the Fourth Proportional to 13,849.16, 19,115.88 and 9,881.78

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Solution

The fourth proportional to 13,849.16, 19,115.88 and 9,881.78 is: 13,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,849.16 : 19,115.88 = 9,881.78 : x
  2. Step 2: Convert to fraction form
    13,849.16/19,115.88 = 9,881.78/x
  3. Step 3: Cross multiply
    13,849.16x = 19,115.88 × 9,881.78
  4. Step 4: Simplify right side
    13,849.16x = 188,898,920.67
  5. Step 5: Solve for x
    x = 188,898,920.67/13,849.16
  6. Step 6: Final answer
    x = 13,639.74

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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.