Home / 20,152.40-27,807.20-11,199.87

Finding the Fourth Proportional to 20,152.40, 27,807.20 and 11,199.87

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Solution

The fourth proportional to 20,152.40, 27,807.20 and 11,199.87 is: 15,454.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,152.40 : 27,807.20 = 11,199.87 : x
  2. Step 2: Convert to fraction form
    20,152.40/27,807.20 = 11,199.87/x
  3. Step 3: Cross multiply
    20,152.40x = 27,807.20 × 11,199.87
  4. Step 4: Simplify right side
    20,152.40x = 311,437,011.06
  5. Step 5: Solve for x
    x = 311,437,011.06/20,152.40
  6. Step 6: Final answer
    x = 15,454.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.