Home / 12,327.84-18,479.43-4,428.21

Finding the Fourth Proportional to 12,327.84, 18,479.43 and 4,428.21

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Solution

The fourth proportional to 12,327.84, 18,479.43 and 4,428.21 is: 6,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,327.84 : 18,479.43 = 4,428.21 : x
  2. Step 2: Convert to fraction form
    12,327.84/18,479.43 = 4,428.21/x
  3. Step 3: Cross multiply
    12,327.84x = 18,479.43 × 4,428.21
  4. Step 4: Simplify right side
    12,327.84x = 81,830,796.72
  5. Step 5: Solve for x
    x = 81,830,796.72/12,327.84
  6. Step 6: Final answer
    x = 6,637.89

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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.