Home / 20,210.48-30,316.20-11,423.60

Finding the Fourth Proportional to 20,210.48, 30,316.20 and 11,423.60

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Solution

The fourth proportional to 20,210.48, 30,316.20 and 11,423.60 is: 17,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.48 : 30,316.20 = 11,423.60 : x
  2. Step 2: Convert to fraction form
    20,210.48/30,316.20 = 11,423.60/x
  3. Step 3: Cross multiply
    20,210.48x = 30,316.20 × 11,423.60
  4. Step 4: Simplify right side
    20,210.48x = 346,320,142.32
  5. Step 5: Solve for x
    x = 346,320,142.32/20,210.48
  6. Step 6: Final answer
    x = 17,135.67

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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.