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Finding the Fourth Proportional to 12,843.99, 19,272.09 and 8,901.32

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Solution

The fourth proportional to 12,843.99, 19,272.09 and 8,901.32 is: 13,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,843.99 : 19,272.09 = 8,901.32 : x
  2. Step 2: Convert to fraction form
    12,843.99/19,272.09 = 8,901.32/x
  3. Step 3: Cross multiply
    12,843.99x = 19,272.09 × 8,901.32
  4. Step 4: Simplify right side
    12,843.99x = 171,547,040.16
  5. Step 5: Solve for x
    x = 171,547,040.16/12,843.99
  6. Step 6: Final answer
    x = 13,356.21

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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.