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Finding the Fourth Proportional to 15,111.54, 20,858.04 and 9,806.04

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Solution

The fourth proportional to 15,111.54, 20,858.04 and 9,806.04 is: 13,535.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.54 : 20,858.04 = 9,806.04 : x
  2. Step 2: Convert to fraction form
    15,111.54/20,858.04 = 9,806.04/x
  3. Step 3: Cross multiply
    15,111.54x = 20,858.04 × 9,806.04
  4. Step 4: Simplify right side
    15,111.54x = 204,534,774.56
  5. Step 5: Solve for x
    x = 204,534,774.56/15,111.54
  6. Step 6: Final answer
    x = 13,535.01

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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.