Home / 12,392.02-17,100.39-7,087.42

Finding the Fourth Proportional to 12,392.02, 17,100.39 and 7,087.42

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Solution

The fourth proportional to 12,392.02, 17,100.39 and 7,087.42 is: 9,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.02 : 17,100.39 = 7,087.42 : x
  2. Step 2: Convert to fraction form
    12,392.02/17,100.39 = 7,087.42/x
  3. Step 3: Cross multiply
    12,392.02x = 17,100.39 × 7,087.42
  4. Step 4: Simplify right side
    12,392.02x = 121,197,646.09
  5. Step 5: Solve for x
    x = 121,197,646.09/12,392.02
  6. Step 6: Final answer
    x = 9,780.30

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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.