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Finding the Fourth Proportional to 15,112.54, 20,859.42 and 9,807.04

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Solution

The fourth proportional to 15,112.54, 20,859.42 and 9,807.04 is: 13,536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.54 : 20,859.42 = 9,807.04 : x
  2. Step 2: Convert to fraction form
    15,112.54/20,859.42 = 9,807.04/x
  3. Step 3: Cross multiply
    15,112.54x = 20,859.42 × 9,807.04
  4. Step 4: Simplify right side
    15,112.54x = 204,569,166.32
  5. Step 5: Solve for x
    x = 204,569,166.32/15,112.54
  6. Step 6: Final answer
    x = 13,536.39

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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.