Home / 13,949.29-19,250.13-7,980.59

Finding the Fourth Proportional to 13,949.29, 19,250.13 and 7,980.59

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Solution

The fourth proportional to 13,949.29, 19,250.13 and 7,980.59 is: 11,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.29 : 19,250.13 = 7,980.59 : x
  2. Step 2: Convert to fraction form
    13,949.29/19,250.13 = 7,980.59/x
  3. Step 3: Cross multiply
    13,949.29x = 19,250.13 × 7,980.59
  4. Step 4: Simplify right side
    13,949.29x = 153,627,394.98
  5. Step 5: Solve for x
    x = 153,627,394.98/13,949.29
  6. Step 6: Final answer
    x = 11,013.28

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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.