Home / 12,642.05-18,957.54-4,319.84

Finding the Fourth Proportional to 12,642.05, 18,957.54 and 4,319.84

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Solution

The fourth proportional to 12,642.05, 18,957.54 and 4,319.84 is: 6,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.05 : 18,957.54 = 4,319.84 : x
  2. Step 2: Convert to fraction form
    12,642.05/18,957.54 = 4,319.84/x
  3. Step 3: Cross multiply
    12,642.05x = 18,957.54 × 4,319.84
  4. Step 4: Simplify right side
    12,642.05x = 81,893,539.59
  5. Step 5: Solve for x
    x = 81,893,539.59/12,642.05
  6. Step 6: Final answer
    x = 6,477.87

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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.