Home / 15,382.17-21,238.77-9,421.97

Finding the Fourth Proportional to 15,382.17, 21,238.77 and 9,421.97

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Solution

The fourth proportional to 15,382.17, 21,238.77 and 9,421.97 is: 13,009.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.17 : 21,238.77 = 9,421.97 : x
  2. Step 2: Convert to fraction form
    15,382.17/21,238.77 = 9,421.97/x
  3. Step 3: Cross multiply
    15,382.17x = 21,238.77 × 9,421.97
  4. Step 4: Simplify right side
    15,382.17x = 200,111,053.78
  5. Step 5: Solve for x
    x = 200,111,053.78/15,382.17
  6. Step 6: Final answer
    x = 13,009.29

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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.