Home / 20,722.24-31,053.12-10,319.68

Finding the Fourth Proportional to 20,722.24, 31,053.12 and 10,319.68

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Solution

The fourth proportional to 20,722.24, 31,053.12 and 10,319.68 is: 15,464.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.24 : 31,053.12 = 10,319.68 : x
  2. Step 2: Convert to fraction form
    20,722.24/31,053.12 = 10,319.68/x
  3. Step 3: Cross multiply
    20,722.24x = 31,053.12 × 10,319.68
  4. Step 4: Simplify right side
    20,722.24x = 320,458,261.40
  5. Step 5: Solve for x
    x = 320,458,261.40/20,722.24
  6. Step 6: Final answer
    x = 15,464.46

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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.