Home / 15,331.11-21,157.52-9,365.46

Finding the Fourth Proportional to 15,331.11, 21,157.52 and 9,365.46

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Solution

The fourth proportional to 15,331.11, 21,157.52 and 9,365.46 is: 12,924.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.11 : 21,157.52 = 9,365.46 : x
  2. Step 2: Convert to fraction form
    15,331.11/21,157.52 = 9,365.46/x
  3. Step 3: Cross multiply
    15,331.11x = 21,157.52 × 9,365.46
  4. Step 4: Simplify right side
    15,331.11x = 198,149,907.26
  5. Step 5: Solve for x
    x = 198,149,907.26/15,331.11
  6. Step 6: Final answer
    x = 12,924.69

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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.