Home / 12,989.88-19,484.53-4,224.78

Finding the Fourth Proportional to 12,989.88, 19,484.53 and 4,224.78

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Solution

The fourth proportional to 12,989.88, 19,484.53 and 4,224.78 is: 6,337.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.88 : 19,484.53 = 4,224.78 : x
  2. Step 2: Convert to fraction form
    12,989.88/19,484.53 = 4,224.78/x
  3. Step 3: Cross multiply
    12,989.88x = 19,484.53 × 4,224.78
  4. Step 4: Simplify right side
    12,989.88x = 82,317,842.09
  5. Step 5: Solve for x
    x = 82,317,842.09/12,989.88
  6. Step 6: Final answer
    x = 6,337.07

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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.