Home / 20,152.53-30,187.22-11,807.20

Finding the Fourth Proportional to 20,152.53, 30,187.22 and 11,807.20

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Solution

The fourth proportional to 20,152.53, 30,187.22 and 11,807.20 is: 17,686.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,152.53 : 30,187.22 = 11,807.20 : x
  2. Step 2: Convert to fraction form
    20,152.53/30,187.22 = 11,807.20/x
  3. Step 3: Cross multiply
    20,152.53x = 30,187.22 × 11,807.20
  4. Step 4: Simplify right side
    20,152.53x = 356,426,522.68
  5. Step 5: Solve for x
    x = 356,426,522.68/20,152.53
  6. Step 6: Final answer
    x = 17,686.44

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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.