Home / 20,355.85-30,532.70-6,503.77

Finding the Fourth Proportional to 20,355.85, 30,532.70 and 6,503.77

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Solution

The fourth proportional to 20,355.85, 30,532.70 and 6,503.77 is: 9,755.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.85 : 30,532.70 = 6,503.77 : x
  2. Step 2: Convert to fraction form
    20,355.85/30,532.70 = 6,503.77/x
  3. Step 3: Cross multiply
    20,355.85x = 30,532.70 × 6,503.77
  4. Step 4: Simplify right side
    20,355.85x = 198,577,625.76
  5. Step 5: Solve for x
    x = 198,577,625.76/20,355.85
  6. Step 6: Final answer
    x = 9,755.31

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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.