Home / 20,011.13-30,015.90-5,018.21

Finding the Fourth Proportional to 20,011.13, 30,015.90 and 5,018.21

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Solution

The fourth proportional to 20,011.13, 30,015.90 and 5,018.21 is: 7,527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,011.13 : 30,015.90 = 5,018.21 : x
  2. Step 2: Convert to fraction form
    20,011.13/30,015.90 = 5,018.21/x
  3. Step 3: Cross multiply
    20,011.13x = 30,015.90 × 5,018.21
  4. Step 4: Simplify right side
    20,011.13x = 150,626,089.54
  5. Step 5: Solve for x
    x = 150,626,089.54/20,011.13
  6. Step 6: Final answer
    x = 7,527.12

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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.