Home / 20,484.49-28,266.64-15,109.85

Finding the Fourth Proportional to 20,484.49, 28,266.64 and 15,109.85

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Solution

The fourth proportional to 20,484.49, 28,266.64 and 15,109.85 is: 20,850.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.49 : 28,266.64 = 15,109.85 : x
  2. Step 2: Convert to fraction form
    20,484.49/28,266.64 = 15,109.85/x
  3. Step 3: Cross multiply
    20,484.49x = 28,266.64 × 15,109.85
  4. Step 4: Simplify right side
    20,484.49x = 427,104,690.40
  5. Step 5: Solve for x
    x = 427,104,690.40/20,484.49
  6. Step 6: Final answer
    x = 20,850.15

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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.