Home / 20,772.23-31,155.61-5,780.35

Finding the Fourth Proportional to 20,772.23, 31,155.61 and 5,780.35

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Solution

The fourth proportional to 20,772.23, 31,155.61 and 5,780.35 is: 8,669.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.23 : 31,155.61 = 5,780.35 : x
  2. Step 2: Convert to fraction form
    20,772.23/31,155.61 = 5,780.35/x
  3. Step 3: Cross multiply
    20,772.23x = 31,155.61 × 5,780.35
  4. Step 4: Simplify right side
    20,772.23x = 180,090,206.60
  5. Step 5: Solve for x
    x = 180,090,206.60/20,772.23
  6. Step 6: Final answer
    x = 8,669.76

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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.