Home / 21,853.26-30,155.18-13,357.46

Finding the Fourth Proportional to 21,853.26, 30,155.18 and 13,357.46

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Solution

The fourth proportional to 21,853.26, 30,155.18 and 13,357.46 is: 18,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.26 : 30,155.18 = 13,357.46 : x
  2. Step 2: Convert to fraction form
    21,853.26/30,155.18 = 13,357.46/x
  3. Step 3: Cross multiply
    21,853.26x = 30,155.18 × 13,357.46
  4. Step 4: Simplify right side
    21,853.26x = 402,796,619.24
  5. Step 5: Solve for x
    x = 402,796,619.24/21,853.26
  6. Step 6: Final answer
    x = 18,431.88

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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.