Home / 11,752.39-16,218.56-6,447.20

Finding the Fourth Proportional to 11,752.39, 16,218.56 and 6,447.20

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Solution

The fourth proportional to 11,752.39, 16,218.56 and 6,447.20 is: 8,897.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,752.39 : 16,218.56 = 6,447.20 : x
  2. Step 2: Convert to fraction form
    11,752.39/16,218.56 = 6,447.20/x
  3. Step 3: Cross multiply
    11,752.39x = 16,218.56 × 6,447.20
  4. Step 4: Simplify right side
    11,752.39x = 104,564,267.80
  5. Step 5: Solve for x
    x = 104,564,267.80/11,752.39
  6. Step 6: Final answer
    x = 8,897.28

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Half scale
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Double scale
Find fourth proportional to 11,753.39, 16,219.94 and 6,448.20
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.