Home / 13,428.52-18,550.04-12,772.44

Finding the Fourth Proportional to 13,428.52, 18,550.04 and 12,772.44

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Solution

The fourth proportional to 13,428.52, 18,550.04 and 12,772.44 is: 17,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.52 : 18,550.04 = 12,772.44 : x
  2. Step 2: Convert to fraction form
    13,428.52/18,550.04 = 12,772.44/x
  3. Step 3: Cross multiply
    13,428.52x = 18,550.04 × 12,772.44
  4. Step 4: Simplify right side
    13,428.52x = 236,929,272.90
  5. Step 5: Solve for x
    x = 236,929,272.90/13,428.52
  6. Step 6: Final answer
    x = 17,643.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.