Home / 12,118.95-16,723.56-6,813.63

Finding the Fourth Proportional to 12,118.95, 16,723.56 and 6,813.63

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Solution

The fourth proportional to 12,118.95, 16,723.56 and 6,813.63 is: 9,402.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.95 : 16,723.56 = 6,813.63 : x
  2. Step 2: Convert to fraction form
    12,118.95/16,723.56 = 6,813.63/x
  3. Step 3: Cross multiply
    12,118.95x = 16,723.56 × 6,813.63
  4. Step 4: Simplify right side
    12,118.95x = 113,948,150.12
  5. Step 5: Solve for x
    x = 113,948,150.12/12,118.95
  6. Step 6: Final answer
    x = 9,402.48

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Half scale
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Double scale
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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.