Home / 20,635.55-28,476.63-11,204.12

Finding the Fourth Proportional to 20,635.55, 28,476.63 and 11,204.12

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Solution

The fourth proportional to 20,635.55, 28,476.63 and 11,204.12 is: 15,461.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.55 : 28,476.63 = 11,204.12 : x
  2. Step 2: Convert to fraction form
    20,635.55/28,476.63 = 11,204.12/x
  3. Step 3: Cross multiply
    20,635.55x = 28,476.63 × 11,204.12
  4. Step 4: Simplify right side
    20,635.55x = 319,055,579.72
  5. Step 5: Solve for x
    x = 319,055,579.72/20,635.55
  6. Step 6: Final answer
    x = 15,461.45

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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.