Home / 15,107.77-20,848.72-9,144.09

Finding the Fourth Proportional to 15,107.77, 20,848.72 and 9,144.09

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Solution

The fourth proportional to 15,107.77, 20,848.72 and 9,144.09 is: 12,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.77 : 20,848.72 = 9,144.09 : x
  2. Step 2: Convert to fraction form
    15,107.77/20,848.72 = 9,144.09/x
  3. Step 3: Cross multiply
    15,107.77x = 20,848.72 × 9,144.09
  4. Step 4: Simplify right side
    15,107.77x = 190,642,540.63
  5. Step 5: Solve for x
    x = 190,642,540.63/15,107.77
  6. Step 6: Final answer
    x = 12,618.84

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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.