Home / 20,793.70-31,190.55-18,547.30

Finding the Fourth Proportional to 20,793.70, 31,190.55 and 18,547.30

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Solution

The fourth proportional to 20,793.70, 31,190.55 and 18,547.30 is: 27,820.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.70 : 31,190.55 = 18,547.30 : x
  2. Step 2: Convert to fraction form
    20,793.70/31,190.55 = 18,547.30/x
  3. Step 3: Cross multiply
    20,793.70x = 31,190.55 × 18,547.30
  4. Step 4: Simplify right side
    20,793.70x = 578,500,488.02
  5. Step 5: Solve for x
    x = 578,500,488.02/20,793.70
  6. Step 6: Final answer
    x = 27,820.95

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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.