Home / 14,280.39-21,375.60-12,775.92

Finding the Fourth Proportional to 14,280.39, 21,375.60 and 12,775.92

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Solution

The fourth proportional to 14,280.39, 21,375.60 and 12,775.92 is: 19,123.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.39 : 21,375.60 = 12,775.92 : x
  2. Step 2: Convert to fraction form
    14,280.39/21,375.60 = 12,775.92/x
  3. Step 3: Cross multiply
    14,280.39x = 21,375.60 × 12,775.92
  4. Step 4: Simplify right side
    14,280.39x = 273,092,955.55
  5. Step 5: Solve for x
    x = 273,092,955.55/14,280.39
  6. Step 6: Final answer
    x = 19,123.63

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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.