Home / 12,117.36-16,722.36-6,813.12

Finding the Fourth Proportional to 12,117.36, 16,722.36 and 6,813.12

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Solution

The fourth proportional to 12,117.36, 16,722.36 and 6,813.12 is: 9,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.36 : 16,722.36 = 6,813.12 : x
  2. Step 2: Convert to fraction form
    12,117.36/16,722.36 = 6,813.12/x
  3. Step 3: Cross multiply
    12,117.36x = 16,722.36 × 6,813.12
  4. Step 4: Simplify right side
    12,117.36x = 113,931,445.36
  5. Step 5: Solve for x
    x = 113,931,445.36/12,117.36
  6. Step 6: Final answer
    x = 9,402.33

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Half scale
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Double scale
Find fourth proportional to 12,118.36, 16,723.74 and 6,814.12
Similar ratio
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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.