Home / 20,372.07-30,559.05-10,530.57

Finding the Fourth Proportional to 20,372.07, 30,559.05 and 10,530.57

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Solution

The fourth proportional to 20,372.07, 30,559.05 and 10,530.57 is: 15,796.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.07 : 30,559.05 = 10,530.57 : x
  2. Step 2: Convert to fraction form
    20,372.07/30,559.05 = 10,530.57/x
  3. Step 3: Cross multiply
    20,372.07x = 30,559.05 × 10,530.57
  4. Step 4: Simplify right side
    20,372.07x = 321,804,215.16
  5. Step 5: Solve for x
    x = 321,804,215.16/20,372.07
  6. Step 6: Final answer
    x = 15,796.34

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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.