Home / 20,399.64-30,539.70-15,488.52

Finding the Fourth Proportional to 20,399.64, 30,539.70 and 15,488.52

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Solution

The fourth proportional to 20,399.64, 30,539.70 and 15,488.52 is: 23,187.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.64 : 30,539.70 = 15,488.52 : x
  2. Step 2: Convert to fraction form
    20,399.64/30,539.70 = 15,488.52/x
  3. Step 3: Cross multiply
    20,399.64x = 30,539.70 × 15,488.52
  4. Step 4: Simplify right side
    20,399.64x = 473,014,754.24
  5. Step 5: Solve for x
    x = 473,014,754.24/20,399.64
  6. Step 6: Final answer
    x = 23,187.41

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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.