Home / 15,891.25-21,933.96-10,857.51

Finding the Fourth Proportional to 15,891.25, 21,933.96 and 10,857.51

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Solution

The fourth proportional to 15,891.25, 21,933.96 and 10,857.51 is: 14,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.25 : 21,933.96 = 10,857.51 : x
  2. Step 2: Convert to fraction form
    15,891.25/21,933.96 = 10,857.51/x
  3. Step 3: Cross multiply
    15,891.25x = 21,933.96 × 10,857.51
  4. Step 4: Simplify right side
    15,891.25x = 238,148,026.08
  5. Step 5: Solve for x
    x = 238,148,026.08/15,891.25
  6. Step 6: Final answer
    x = 14,986.11

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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.