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Finding the Fourth Proportional to 12,917.16, 19,317.24 and 9,955.08

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Solution

The fourth proportional to 12,917.16, 19,317.24 and 9,955.08 is: 14,887.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.16 : 19,317.24 = 9,955.08 : x
  2. Step 2: Convert to fraction form
    12,917.16/19,317.24 = 9,955.08/x
  3. Step 3: Cross multiply
    12,917.16x = 19,317.24 × 9,955.08
  4. Step 4: Simplify right side
    12,917.16x = 192,304,669.58
  5. Step 5: Solve for x
    x = 192,304,669.58/12,917.16
  6. Step 6: Final answer
    x = 14,887.53

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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.