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Finding the Fourth Proportional to 20,802.95, 28,701.07 and 11,844.11

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Solution

The fourth proportional to 20,802.95, 28,701.07 and 11,844.11 is: 16,340.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.95 : 28,701.07 = 11,844.11 : x
  2. Step 2: Convert to fraction form
    20,802.95/28,701.07 = 11,844.11/x
  3. Step 3: Cross multiply
    20,802.95x = 28,701.07 × 11,844.11
  4. Step 4: Simplify right side
    20,802.95x = 339,938,672.34
  5. Step 5: Solve for x
    x = 339,938,672.34/20,802.95
  6. Step 6: Final answer
    x = 16,340.89

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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.