Home / 20,503.83-30,756.60-10,636.77

Finding the Fourth Proportional to 20,503.83, 30,756.60 and 10,636.77

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Solution

The fourth proportional to 20,503.83, 30,756.60 and 10,636.77 is: 15,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.83 : 30,756.60 = 10,636.77 : x
  2. Step 2: Convert to fraction form
    20,503.83/30,756.60 = 10,636.77/x
  3. Step 3: Cross multiply
    20,503.83x = 30,756.60 × 10,636.77
  4. Step 4: Simplify right side
    20,503.83x = 327,150,880.18
  5. Step 5: Solve for x
    x = 327,150,880.18/20,503.83
  6. Step 6: Final answer
    x = 15,955.60

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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.