Home / 20,458.36-30,687.90-7,320.16

Finding the Fourth Proportional to 20,458.36, 30,687.90 and 7,320.16

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Solution

The fourth proportional to 20,458.36, 30,687.90 and 7,320.16 is: 10,980.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.36 : 30,687.90 = 7,320.16 : x
  2. Step 2: Convert to fraction form
    20,458.36/30,687.90 = 7,320.16/x
  3. Step 3: Cross multiply
    20,458.36x = 30,687.90 × 7,320.16
  4. Step 4: Simplify right side
    20,458.36x = 224,640,338.06
  5. Step 5: Solve for x
    x = 224,640,338.06/20,458.36
  6. Step 6: Final answer
    x = 10,980.37

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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.