Home / 12,906.20-17,810.46-7,317.40

Finding the Fourth Proportional to 12,906.20, 17,810.46 and 7,317.40

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Solution

The fourth proportional to 12,906.20, 17,810.46 and 7,317.40 is: 10,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.20 : 17,810.46 = 7,317.40 : x
  2. Step 2: Convert to fraction form
    12,906.20/17,810.46 = 7,317.40/x
  3. Step 3: Cross multiply
    12,906.20x = 17,810.46 × 7,317.40
  4. Step 4: Simplify right side
    12,906.20x = 130,326,260.00
  5. Step 5: Solve for x
    x = 130,326,260.00/12,906.20
  6. Step 6: Final answer
    x = 10,097.96

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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.