Home / 13,919.13-19,208.34-7,631.51

Finding the Fourth Proportional to 13,919.13, 19,208.34 and 7,631.51

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Solution

The fourth proportional to 13,919.13, 19,208.34 and 7,631.51 is: 10,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.13 : 19,208.34 = 7,631.51 : x
  2. Step 2: Convert to fraction form
    13,919.13/19,208.34 = 7,631.51/x
  3. Step 3: Cross multiply
    13,919.13x = 19,208.34 × 7,631.51
  4. Step 4: Simplify right side
    13,919.13x = 146,588,542.75
  5. Step 5: Solve for x
    x = 146,588,542.75/13,919.13
  6. Step 6: Final answer
    x = 10,531.44

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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.