Home / 15,891.47-21,935.27-11,189.51

Finding the Fourth Proportional to 15,891.47, 21,935.27 and 11,189.51

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Solution

The fourth proportional to 15,891.47, 21,935.27 and 11,189.51 is: 15,445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.47 : 21,935.27 = 11,189.51 : x
  2. Step 2: Convert to fraction form
    15,891.47/21,935.27 = 11,189.51/x
  3. Step 3: Cross multiply
    15,891.47x = 21,935.27 × 11,189.51
  4. Step 4: Simplify right side
    15,891.47x = 245,444,867.07
  5. Step 5: Solve for x
    x = 245,444,867.07/15,891.47
  6. Step 6: Final answer
    x = 15,445.07

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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.