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Finding the Fourth Proportional to 12,810.15, 19,215.23 and 6,249.15

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Solution

The fourth proportional to 12,810.15, 19,215.23 and 6,249.15 is: 9,373.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.15 : 19,215.23 = 6,249.15 : x
  2. Step 2: Convert to fraction form
    12,810.15/19,215.23 = 6,249.15/x
  3. Step 3: Cross multiply
    12,810.15x = 19,215.23 × 6,249.15
  4. Step 4: Simplify right side
    12,810.15x = 120,078,823.31
  5. Step 5: Solve for x
    x = 120,078,823.31/12,810.15
  6. Step 6: Final answer
    x = 9,373.73

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.