Home / 20,350.21-30,529.95-7,870.27

Finding the Fourth Proportional to 20,350.21, 30,529.95 and 7,870.27

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Solution

The fourth proportional to 20,350.21, 30,529.95 and 7,870.27 is: 11,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.21 : 30,529.95 = 7,870.27 : x
  2. Step 2: Convert to fraction form
    20,350.21/30,529.95 = 7,870.27/x
  3. Step 3: Cross multiply
    20,350.21x = 30,529.95 × 7,870.27
  4. Step 4: Simplify right side
    20,350.21x = 240,278,949.59
  5. Step 5: Solve for x
    x = 240,278,949.59/20,350.21
  6. Step 6: Final answer
    x = 11,807.20

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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.