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Finding the Fourth Proportional to 15,106.69, 20,844.06 and 9,137.19

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Solution

The fourth proportional to 15,106.69, 20,844.06 and 9,137.19 is: 12,607.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.69 : 20,844.06 = 9,137.19 : x
  2. Step 2: Convert to fraction form
    15,106.69/20,844.06 = 9,137.19/x
  3. Step 3: Cross multiply
    15,106.69x = 20,844.06 × 9,137.19
  4. Step 4: Simplify right side
    15,106.69x = 190,456,136.59
  5. Step 5: Solve for x
    x = 190,456,136.59/15,106.69
  6. Step 6: Final answer
    x = 12,607.40

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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.