Home / 20,825.51-31,275.18-19,964.48

Finding the Fourth Proportional to 20,825.51, 31,275.18 and 19,964.48

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Solution

The fourth proportional to 20,825.51, 31,275.18 and 19,964.48 is: 29,982.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.51 : 31,275.18 = 19,964.48 : x
  2. Step 2: Convert to fraction form
    20,825.51/31,275.18 = 19,964.48/x
  3. Step 3: Cross multiply
    20,825.51x = 31,275.18 × 19,964.48
  4. Step 4: Simplify right side
    20,825.51x = 624,392,549.23
  5. Step 5: Solve for x
    x = 624,392,549.23/20,825.51
  6. Step 6: Final answer
    x = 29,982.11

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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.