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Finding the Fourth Proportional to 20,635.56, 28,477.56 and 11,204.10

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Solution

The fourth proportional to 20,635.56, 28,477.56 and 11,204.10 is: 15,461.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.56 : 28,477.56 = 11,204.10 : x
  2. Step 2: Convert to fraction form
    20,635.56/28,477.56 = 11,204.10/x
  3. Step 3: Cross multiply
    20,635.56x = 28,477.56 × 11,204.10
  4. Step 4: Simplify right side
    20,635.56x = 319,065,430.00
  5. Step 5: Solve for x
    x = 319,065,430.00/20,635.56
  6. Step 6: Final answer
    x = 15,461.92

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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.