Home / 15,218.33-21,007.13-13,622.15

Finding the Fourth Proportional to 15,218.33, 21,007.13 and 13,622.15

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Solution

The fourth proportional to 15,218.33, 21,007.13 and 13,622.15 is: 18,803.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.33 : 21,007.13 = 13,622.15 : x
  2. Step 2: Convert to fraction form
    15,218.33/21,007.13 = 13,622.15/x
  3. Step 3: Cross multiply
    15,218.33x = 21,007.13 × 13,622.15
  4. Step 4: Simplify right side
    15,218.33x = 286,162,260.34
  5. Step 5: Solve for x
    x = 286,162,260.34/15,218.33
  6. Step 6: Final answer
    x = 18,803.79

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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.