Home / 20,387.85-30,580.29-5,595.50

Finding the Fourth Proportional to 20,387.85, 30,580.29 and 5,595.50

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Solution

The fourth proportional to 20,387.85, 30,580.29 and 5,595.50 is: 8,392.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.85 : 30,580.29 = 5,595.50 : x
  2. Step 2: Convert to fraction form
    20,387.85/30,580.29 = 5,595.50/x
  3. Step 3: Cross multiply
    20,387.85x = 30,580.29 × 5,595.50
  4. Step 4: Simplify right side
    20,387.85x = 171,111,859.79
  5. Step 5: Solve for x
    x = 171,111,859.79/20,387.85
  6. Step 6: Final answer
    x = 8,392.83

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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.