Home / 12,880.52-19,319.56-4,113.92

Finding the Fourth Proportional to 12,880.52, 19,319.56 and 4,113.92

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Solution

The fourth proportional to 12,880.52, 19,319.56 and 4,113.92 is: 6,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.52 : 19,319.56 = 4,113.92 : x
  2. Step 2: Convert to fraction form
    12,880.52/19,319.56 = 4,113.92/x
  3. Step 3: Cross multiply
    12,880.52x = 19,319.56 × 4,113.92
  4. Step 4: Simplify right side
    12,880.52x = 79,479,124.28
  5. Step 5: Solve for x
    x = 79,479,124.28/12,880.52
  6. Step 6: Final answer
    x = 6,170.49

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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.