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Finding the Fourth Proportional to 13,297, 19,905.18 and 8,879.08

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Solution

The fourth proportional to 13,297, 19,905.18 and 8,879.08 is: 13,291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297 : 19,905.18 = 8,879.08 : x
  2. Step 2: Convert to fraction form
    13,297/19,905.18 = 8,879.08/x
  3. Step 3: Cross multiply
    13,297x = 19,905.18 × 8,879.08
  4. Step 4: Simplify right side
    13,297x = 176,739,685.63
  5. Step 5: Solve for x
    x = 176,739,685.63/13,297
  6. Step 6: Final answer
    x = 13,291.70

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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.