Home / 10,115.58-13,973.13-9,172.44

Finding the Fourth Proportional to 10,115.58, 13,973.13 and 9,172.44

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Solution

The fourth proportional to 10,115.58, 13,973.13 and 9,172.44 is: 12,670.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.58 : 13,973.13 = 9,172.44 : x
  2. Step 2: Convert to fraction form
    10,115.58/13,973.13 = 9,172.44/x
  3. Step 3: Cross multiply
    10,115.58x = 13,973.13 × 9,172.44
  4. Step 4: Simplify right side
    10,115.58x = 128,167,696.54
  5. Step 5: Solve for x
    x = 128,167,696.54/10,115.58
  6. Step 6: Final answer
    x = 12,670.33

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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.