Home / 20,155.47-27,813.27-11,202.67

Finding the Fourth Proportional to 20,155.47, 27,813.27 and 11,202.67

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Solution

The fourth proportional to 20,155.47, 27,813.27 and 11,202.67 is: 15,458.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.47 : 27,813.27 = 11,202.67 : x
  2. Step 2: Convert to fraction form
    20,155.47/27,813.27 = 11,202.67/x
  3. Step 3: Cross multiply
    20,155.47x = 27,813.27 × 11,202.67
  4. Step 4: Simplify right side
    20,155.47x = 311,582,962.21
  5. Step 5: Solve for x
    x = 311,582,962.21/20,155.47
  6. Step 6: Final answer
    x = 15,458.98

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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.