Home / 13,918.92-19,208.10-7,631.40

Finding the Fourth Proportional to 13,918.92, 19,208.10 and 7,631.40

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Solution

The fourth proportional to 13,918.92, 19,208.10 and 7,631.40 is: 10,531.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.92 : 19,208.10 = 7,631.40 : x
  2. Step 2: Convert to fraction form
    13,918.92/19,208.10 = 7,631.40/x
  3. Step 3: Cross multiply
    13,918.92x = 19,208.10 × 7,631.40
  4. Step 4: Simplify right side
    13,918.92x = 146,584,694.34
  5. Step 5: Solve for x
    x = 146,584,694.34/13,918.92
  6. Step 6: Final answer
    x = 10,531.33

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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.