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Finding the Fourth Proportional to 12,901.48, 17,803.84 and 7,236.22

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Solution

The fourth proportional to 12,901.48, 17,803.84 and 7,236.22 is: 9,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.48 : 17,803.84 = 7,236.22 : x
  2. Step 2: Convert to fraction form
    12,901.48/17,803.84 = 7,236.22/x
  3. Step 3: Cross multiply
    12,901.48x = 17,803.84 × 7,236.22
  4. Step 4: Simplify right side
    12,901.48x = 128,832,503.08
  5. Step 5: Solve for x
    x = 128,832,503.08/12,901.48
  6. Step 6: Final answer
    x = 9,985.87

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Half scale
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Double scale
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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.