Home / 12,889.62-19,341.51-5,398.55

Finding the Fourth Proportional to 12,889.62, 19,341.51 and 5,398.55

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Solution

The fourth proportional to 12,889.62, 19,341.51 and 5,398.55 is: 8,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.62 : 19,341.51 = 5,398.55 : x
  2. Step 2: Convert to fraction form
    12,889.62/19,341.51 = 5,398.55/x
  3. Step 3: Cross multiply
    12,889.62x = 19,341.51 × 5,398.55
  4. Step 4: Simplify right side
    12,889.62x = 104,416,177.41
  5. Step 5: Solve for x
    x = 104,416,177.41/12,889.62
  6. Step 6: Final answer
    x = 8,100.80

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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.