Home / 20,621.58-30,930.69-5,830.14

Finding the Fourth Proportional to 20,621.58, 30,930.69 and 5,830.14

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Solution

The fourth proportional to 20,621.58, 30,930.69 and 5,830.14 is: 8,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.58 : 30,930.69 = 5,830.14 : x
  2. Step 2: Convert to fraction form
    20,621.58/30,930.69 = 5,830.14/x
  3. Step 3: Cross multiply
    20,621.58x = 30,930.69 × 5,830.14
  4. Step 4: Simplify right side
    20,621.58x = 180,330,253.00
  5. Step 5: Solve for x
    x = 180,330,253.00/20,621.58
  6. Step 6: Final answer
    x = 8,744.74

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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.