Home / 20,431.47-30,604.68-19,726.50

Finding the Fourth Proportional to 20,431.47, 30,604.68 and 19,726.50

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Solution

The fourth proportional to 20,431.47, 30,604.68 and 19,726.50 is: 29,548.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.47 : 30,604.68 = 19,726.50 : x
  2. Step 2: Convert to fraction form
    20,431.47/30,604.68 = 19,726.50/x
  3. Step 3: Cross multiply
    20,431.47x = 30,604.68 × 19,726.50
  4. Step 4: Simplify right side
    20,431.47x = 603,723,220.02
  5. Step 5: Solve for x
    x = 603,723,220.02/20,431.47
  6. Step 6: Final answer
    x = 29,548.69

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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.