Home / 13,948.69-19,252.85-8,640.49

Finding the Fourth Proportional to 13,948.69, 19,252.85 and 8,640.49

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Solution

The fourth proportional to 13,948.69, 19,252.85 and 8,640.49 is: 11,926.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,948.69 : 19,252.85 = 8,640.49 : x
  2. Step 2: Convert to fraction form
    13,948.69/19,252.85 = 8,640.49/x
  3. Step 3: Cross multiply
    13,948.69x = 19,252.85 × 8,640.49
  4. Step 4: Simplify right side
    13,948.69x = 166,354,057.90
  5. Step 5: Solve for x
    x = 166,354,057.90/13,948.69
  6. Step 6: Final answer
    x = 11,926.14

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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.