Home / 13,918.77-19,208.39-7,631.15

Finding the Fourth Proportional to 13,918.77, 19,208.39 and 7,631.15

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Solution

The fourth proportional to 13,918.77, 19,208.39 and 7,631.15 is: 10,531.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.77 : 19,208.39 = 7,631.15 : x
  2. Step 2: Convert to fraction form
    13,918.77/19,208.39 = 7,631.15/x
  3. Step 3: Cross multiply
    13,918.77x = 19,208.39 × 7,631.15
  4. Step 4: Simplify right side
    13,918.77x = 146,581,971.15
  5. Step 5: Solve for x
    x = 146,581,971.15/13,918.77
  6. Step 6: Final answer
    x = 10,531.24

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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.