Home / 20,000.77-27,602.57-11,505.49

Finding the Fourth Proportional to 20,000.77, 27,602.57 and 11,505.49

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Solution

The fourth proportional to 20,000.77, 27,602.57 and 11,505.49 is: 15,878.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.77 : 27,602.57 = 11,505.49 : x
  2. Step 2: Convert to fraction form
    20,000.77/27,602.57 = 11,505.49/x
  3. Step 3: Cross multiply
    20,000.77x = 27,602.57 × 11,505.49
  4. Step 4: Simplify right side
    20,000.77x = 317,581,093.11
  5. Step 5: Solve for x
    x = 317,581,093.11/20,000.77
  6. Step 6: Final answer
    x = 15,878.44

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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.