Home / 20,132.90-30,199.31-5,140.01

Finding the Fourth Proportional to 20,132.90, 30,199.31 and 5,140.01

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Solution

The fourth proportional to 20,132.90, 30,199.31 and 5,140.01 is: 7,710.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.90 : 30,199.31 = 5,140.01 : x
  2. Step 2: Convert to fraction form
    20,132.90/30,199.31 = 5,140.01/x
  3. Step 3: Cross multiply
    20,132.90x = 30,199.31 × 5,140.01
  4. Step 4: Simplify right side
    20,132.90x = 155,224,843.74
  5. Step 5: Solve for x
    x = 155,224,843.74/20,132.90
  6. Step 6: Final answer
    x = 7,710.01

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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.