Home / 12,150.47-18,225.71-3,385.46

Finding the Fourth Proportional to 12,150.47, 18,225.71 and 3,385.46

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Solution

The fourth proportional to 12,150.47, 18,225.71 and 3,385.46 is: 5,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.47 : 18,225.71 = 3,385.46 : x
  2. Step 2: Convert to fraction form
    12,150.47/18,225.71 = 3,385.46/x
  3. Step 3: Cross multiply
    12,150.47x = 18,225.71 × 3,385.46
  4. Step 4: Simplify right side
    12,150.47x = 61,702,453.51
  5. Step 5: Solve for x
    x = 61,702,453.51/12,150.47
  6. Step 6: Final answer
    x = 5,078.19

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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.