Home / 28,132.09-42,161.22-20,701.77

Finding the Fourth Proportional to 28,132.09, 42,161.22 and 20,701.77

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Solution

The fourth proportional to 28,132.09, 42,161.22 and 20,701.77 is: 31,025.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.09 : 42,161.22 = 20,701.77 : x
  2. Step 2: Convert to fraction form
    28,132.09/42,161.22 = 20,701.77/x
  3. Step 3: Cross multiply
    28,132.09x = 42,161.22 × 20,701.77
  4. Step 4: Simplify right side
    28,132.09x = 872,811,879.36
  5. Step 5: Solve for x
    x = 872,811,879.36/28,132.09
  6. Step 6: Final answer
    x = 31,025.49

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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.