Home / 20,437.30-30,643.63-13,326.82

Finding the Fourth Proportional to 20,437.30, 30,643.63 and 13,326.82

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Solution

The fourth proportional to 20,437.30, 30,643.63 and 13,326.82 is: 19,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.30 : 30,643.63 = 13,326.82 : x
  2. Step 2: Convert to fraction form
    20,437.30/30,643.63 = 13,326.82/x
  3. Step 3: Cross multiply
    20,437.30x = 30,643.63 × 13,326.82
  4. Step 4: Simplify right side
    20,437.30x = 408,382,141.16
  5. Step 5: Solve for x
    x = 408,382,141.16/20,437.30
  6. Step 6: Final answer
    x = 19,982.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.