Home / 15,918.86-21,975.82-9,952.45

Finding the Fourth Proportional to 15,918.86, 21,975.82 and 9,952.45

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Solution

The fourth proportional to 15,918.86, 21,975.82 and 9,952.45 is: 13,739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.86 : 21,975.82 = 9,952.45 : x
  2. Step 2: Convert to fraction form
    15,918.86/21,975.82 = 9,952.45/x
  3. Step 3: Cross multiply
    15,918.86x = 21,975.82 × 9,952.45
  4. Step 4: Simplify right side
    15,918.86x = 218,713,249.76
  5. Step 5: Solve for x
    x = 218,713,249.76/15,918.86
  6. Step 6: Final answer
    x = 13,739.25

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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.