Home / 20,153.40-27,808.58-11,200.87

Finding the Fourth Proportional to 20,153.40, 27,808.58 and 11,200.87

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Solution

The fourth proportional to 20,153.40, 27,808.58 and 11,200.87 is: 15,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.40 : 27,808.58 = 11,200.87 : x
  2. Step 2: Convert to fraction form
    20,153.40/27,808.58 = 11,200.87/x
  3. Step 3: Cross multiply
    20,153.40x = 27,808.58 × 11,200.87
  4. Step 4: Simplify right side
    20,153.40x = 311,480,289.46
  5. Step 5: Solve for x
    x = 311,480,289.46/20,153.40
  6. Step 6: Final answer
    x = 15,455.47

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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.