Home / 12,179.93-18,270.59-3,415.52

Finding the Fourth Proportional to 12,179.93, 18,270.59 and 3,415.52

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Solution

The fourth proportional to 12,179.93, 18,270.59 and 3,415.52 is: 5,123.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.93 : 18,270.59 = 3,415.52 : x
  2. Step 2: Convert to fraction form
    12,179.93/18,270.59 = 3,415.52/x
  3. Step 3: Cross multiply
    12,179.93x = 18,270.59 × 3,415.52
  4. Step 4: Simplify right side
    12,179.93x = 62,403,457.13
  5. Step 5: Solve for x
    x = 62,403,457.13/12,179.93
  6. Step 6: Final answer
    x = 5,123.47

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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.