Home / 15,389.19-21,236.58-9,727.02

Finding the Fourth Proportional to 15,389.19, 21,236.58 and 9,727.02

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Solution

The fourth proportional to 15,389.19, 21,236.58 and 9,727.02 is: 13,422.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.19 : 21,236.58 = 9,727.02 : x
  2. Step 2: Convert to fraction form
    15,389.19/21,236.58 = 9,727.02/x
  3. Step 3: Cross multiply
    15,389.19x = 21,236.58 × 9,727.02
  4. Step 4: Simplify right side
    15,389.19x = 206,568,638.39
  5. Step 5: Solve for x
    x = 206,568,638.39/15,389.19
  6. Step 6: Final answer
    x = 13,422.97

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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.