Home / 13,992.94-20,988.98-5,670.72

Finding the Fourth Proportional to 13,992.94, 20,988.98 and 5,670.72

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Solution

The fourth proportional to 13,992.94, 20,988.98 and 5,670.72 is: 8,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.94 : 20,988.98 = 5,670.72 : x
  2. Step 2: Convert to fraction form
    13,992.94/20,988.98 = 5,670.72/x
  3. Step 3: Cross multiply
    13,992.94x = 20,988.98 × 5,670.72
  4. Step 4: Simplify right side
    13,992.94x = 119,022,600.31
  5. Step 5: Solve for x
    x = 119,022,600.31/13,992.94
  6. Step 6: Final answer
    x = 8,505.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.