Home / 20,711.85-31,050.77-8,226.51

Finding the Fourth Proportional to 20,711.85, 31,050.77 and 8,226.51

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Solution

The fourth proportional to 20,711.85, 31,050.77 and 8,226.51 is: 12,333.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.85 : 31,050.77 = 8,226.51 : x
  2. Step 2: Convert to fraction form
    20,711.85/31,050.77 = 8,226.51/x
  3. Step 3: Cross multiply
    20,711.85x = 31,050.77 × 8,226.51
  4. Step 4: Simplify right side
    20,711.85x = 255,439,428.78
  5. Step 5: Solve for x
    x = 255,439,428.78/20,711.85
  6. Step 6: Final answer
    x = 12,333.01

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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.