Home / 12,395.45-17,105.65-7,090.36

Finding the Fourth Proportional to 12,395.45, 17,105.65 and 7,090.36

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Solution

The fourth proportional to 12,395.45, 17,105.65 and 7,090.36 is: 9,784.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.45 : 17,105.65 = 7,090.36 : x
  2. Step 2: Convert to fraction form
    12,395.45/17,105.65 = 7,090.36/x
  3. Step 3: Cross multiply
    12,395.45x = 17,105.65 × 7,090.36
  4. Step 4: Simplify right side
    12,395.45x = 121,285,156.04
  5. Step 5: Solve for x
    x = 121,285,156.04/12,395.45
  6. Step 6: Final answer
    x = 9,784.65

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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.