Home / 20,128.02-30,183.58-7,641.16

Finding the Fourth Proportional to 20,128.02, 30,183.58 and 7,641.16

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Solution

The fourth proportional to 20,128.02, 30,183.58 and 7,641.16 is: 11,458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.02 : 30,183.58 = 7,641.16 : x
  2. Step 2: Convert to fraction form
    20,128.02/30,183.58 = 7,641.16/x
  3. Step 3: Cross multiply
    20,128.02x = 30,183.58 × 7,641.16
  4. Step 4: Simplify right side
    20,128.02x = 230,637,498.25
  5. Step 5: Solve for x
    x = 230,637,498.25/20,128.02
  6. Step 6: Final answer
    x = 11,458.53

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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.