Home / 13,764.68-18,992.54-8,385.74

Finding the Fourth Proportional to 13,764.68, 18,992.54 and 8,385.74

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Solution

The fourth proportional to 13,764.68, 18,992.54 and 8,385.74 is: 11,570.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.68 : 18,992.54 = 8,385.74 : x
  2. Step 2: Convert to fraction form
    13,764.68/18,992.54 = 8,385.74/x
  3. Step 3: Cross multiply
    13,764.68x = 18,992.54 × 8,385.74
  4. Step 4: Simplify right side
    13,764.68x = 159,266,460.45
  5. Step 5: Solve for x
    x = 159,266,460.45/13,764.68
  6. Step 6: Final answer
    x = 11,570.66

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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.