Home / 12,101.48-18,141.29-8,405.45

Finding the Fourth Proportional to 12,101.48, 18,141.29 and 8,405.45

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Solution

The fourth proportional to 12,101.48, 18,141.29 and 8,405.45 is: 12,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.48 : 18,141.29 = 8,405.45 : x
  2. Step 2: Convert to fraction form
    12,101.48/18,141.29 = 8,405.45/x
  3. Step 3: Cross multiply
    12,101.48x = 18,141.29 × 8,405.45
  4. Step 4: Simplify right side
    12,101.48x = 152,485,664.00
  5. Step 5: Solve for x
    x = 152,485,664.00/12,101.48
  6. Step 6: Final answer
    x = 12,600.58

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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.