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Finding the Fourth Proportional to 9,515.43, 13,101.48 and 8,640.63

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Solution

The fourth proportional to 9,515.43, 13,101.48 and 8,640.63 is: 11,897.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,515.43 : 13,101.48 = 8,640.63 : x
  2. Step 2: Convert to fraction form
    9,515.43/13,101.48 = 8,640.63/x
  3. Step 3: Cross multiply
    9,515.43x = 13,101.48 × 8,640.63
  4. Step 4: Simplify right side
    9,515.43x = 113,205,041.13
  5. Step 5: Solve for x
    x = 113,205,041.13/9,515.43
  6. Step 6: Final answer
    x = 11,897.00

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Double scale
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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.