Home / 21,309.40-31,964.05-5,727.03

Finding the Fourth Proportional to 21,309.40, 31,964.05 and 5,727.03

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Solution

The fourth proportional to 21,309.40, 31,964.05 and 5,727.03 is: 8,590.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.40 : 31,964.05 = 5,727.03 : x
  2. Step 2: Convert to fraction form
    21,309.40/31,964.05 = 5,727.03/x
  3. Step 3: Cross multiply
    21,309.40x = 31,964.05 × 5,727.03
  4. Step 4: Simplify right side
    21,309.40x = 183,059,073.27
  5. Step 5: Solve for x
    x = 183,059,073.27/21,309.40
  6. Step 6: Final answer
    x = 8,590.53

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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.