Home / 12,890.95-19,338.85-5,100.37

Finding the Fourth Proportional to 12,890.95, 19,338.85 and 5,100.37

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Solution

The fourth proportional to 12,890.95, 19,338.85 and 5,100.37 is: 7,651.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.95 : 19,338.85 = 5,100.37 : x
  2. Step 2: Convert to fraction form
    12,890.95/19,338.85 = 5,100.37/x
  3. Step 3: Cross multiply
    12,890.95x = 19,338.85 × 5,100.37
  4. Step 4: Simplify right side
    12,890.95x = 98,635,248.40
  5. Step 5: Solve for x
    x = 98,635,248.40/12,890.95
  6. Step 6: Final answer
    x = 7,651.51

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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.