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Finding the Fourth Proportional to 11,868.63, 17,805.65 and 6,319.05

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Solution

The fourth proportional to 11,868.63, 17,805.65 and 6,319.05 is: 9,480.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.63 : 17,805.65 = 6,319.05 : x
  2. Step 2: Convert to fraction form
    11,868.63/17,805.65 = 6,319.05/x
  3. Step 3: Cross multiply
    11,868.63x = 17,805.65 × 6,319.05
  4. Step 4: Simplify right side
    11,868.63x = 112,514,761.04
  5. Step 5: Solve for x
    x = 112,514,761.04/11,868.63
  6. Step 6: Final answer
    x = 9,480.01

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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.