Home / 20,605.12-30,907.36-5,022.72

Finding the Fourth Proportional to 20,605.12, 30,907.36 and 5,022.72

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Solution

The fourth proportional to 20,605.12, 30,907.36 and 5,022.72 is: 7,534.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.12 : 30,907.36 = 5,022.72 : x
  2. Step 2: Convert to fraction form
    20,605.12/30,907.36 = 5,022.72/x
  3. Step 3: Cross multiply
    20,605.12x = 30,907.36 × 5,022.72
  4. Step 4: Simplify right side
    20,605.12x = 155,239,015.22
  5. Step 5: Solve for x
    x = 155,239,015.22/20,605.12
  6. Step 6: Final answer
    x = 7,534.00

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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.