Home / 12,587.07-17,369.79-6,921.84

Finding the Fourth Proportional to 12,587.07, 17,369.79 and 6,921.84

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Solution

The fourth proportional to 12,587.07, 17,369.79 and 6,921.84 is: 9,551.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.07 : 17,369.79 = 6,921.84 : x
  2. Step 2: Convert to fraction form
    12,587.07/17,369.79 = 6,921.84/x
  3. Step 3: Cross multiply
    12,587.07x = 17,369.79 × 6,921.84
  4. Step 4: Simplify right side
    12,587.07x = 120,230,907.21
  5. Step 5: Solve for x
    x = 120,230,907.21/12,587.07
  6. Step 6: Final answer
    x = 9,551.94

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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.