Home / 20,635.62-28,477.32-11,204.20

Finding the Fourth Proportional to 20,635.62, 28,477.32 and 11,204.20

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Solution

The fourth proportional to 20,635.62, 28,477.32 and 11,204.20 is: 15,461.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.62 : 28,477.32 = 11,204.20 : x
  2. Step 2: Convert to fraction form
    20,635.62/28,477.32 = 11,204.20/x
  3. Step 3: Cross multiply
    20,635.62x = 28,477.32 × 11,204.20
  4. Step 4: Simplify right side
    20,635.62x = 319,065,588.74
  5. Step 5: Solve for x
    x = 319,065,588.74/20,635.62
  6. Step 6: Final answer
    x = 15,461.89

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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.