Home / 53,321.15-79,920.21-20,019.98

Finding the Fourth Proportional to 53,321.15, 79,920.21 and 20,019.98

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Solution

The fourth proportional to 53,321.15, 79,920.21 and 20,019.98 is: 30,006.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,321.15 : 79,920.21 = 20,019.98 : x
  2. Step 2: Convert to fraction form
    53,321.15/79,920.21 = 20,019.98/x
  3. Step 3: Cross multiply
    53,321.15x = 79,920.21 × 20,019.98
  4. Step 4: Simplify right side
    53,321.15x = 1,600,000,606.19
  5. Step 5: Solve for x
    x = 1,600,000,606.19/53,321.15
  6. Step 6: Final answer
    x = 30,006.87

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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.