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Finding the Fourth Proportional to 15,796.08, 21,798.72 and 8,722.08

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Solution

The fourth proportional to 15,796.08, 21,798.72 and 8,722.08 is: 12,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.08 : 21,798.72 = 8,722.08 : x
  2. Step 2: Convert to fraction form
    15,796.08/21,798.72 = 8,722.08/x
  3. Step 3: Cross multiply
    15,796.08x = 21,798.72 × 8,722.08
  4. Step 4: Simplify right side
    15,796.08x = 190,130,179.74
  5. Step 5: Solve for x
    x = 190,130,179.74/15,796.08
  6. Step 6: Final answer
    x = 12,036.54

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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.