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Finding the Fourth Proportional to 15,101.56, 20,838.63 and 8,817.58

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Solution

The fourth proportional to 15,101.56, 20,838.63 and 8,817.58 is: 12,167.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.56 : 20,838.63 = 8,817.58 : x
  2. Step 2: Convert to fraction form
    15,101.56/20,838.63 = 8,817.58/x
  3. Step 3: Cross multiply
    15,101.56x = 20,838.63 × 8,817.58
  4. Step 4: Simplify right side
    15,101.56x = 183,746,287.12
  5. Step 5: Solve for x
    x = 183,746,287.12/15,101.56
  6. Step 6: Final answer
    x = 12,167.37

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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.