Home / 15,646.82-21,603.66-9,680.36

Finding the Fourth Proportional to 15,646.82, 21,603.66 and 9,680.36

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Solution

The fourth proportional to 15,646.82, 21,603.66 and 9,680.36 is: 13,365.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,646.82 : 21,603.66 = 9,680.36 : x
  2. Step 2: Convert to fraction form
    15,646.82/21,603.66 = 9,680.36/x
  3. Step 3: Cross multiply
    15,646.82x = 21,603.66 × 9,680.36
  4. Step 4: Simplify right side
    15,646.82x = 209,131,206.12
  5. Step 5: Solve for x
    x = 209,131,206.12/15,646.82
  6. Step 6: Final answer
    x = 13,365.73

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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.