Home / 12,890.20-19,338.70-5,495.08

Finding the Fourth Proportional to 12,890.20, 19,338.70 and 5,495.08

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Solution

The fourth proportional to 12,890.20, 19,338.70 and 5,495.08 is: 8,244.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.20 : 19,338.70 = 5,495.08 : x
  2. Step 2: Convert to fraction form
    12,890.20/19,338.70 = 5,495.08/x
  3. Step 3: Cross multiply
    12,890.20x = 19,338.70 × 5,495.08
  4. Step 4: Simplify right side
    12,890.20x = 106,267,703.60
  5. Step 5: Solve for x
    x = 106,267,703.60/12,890.20
  6. Step 6: Final answer
    x = 8,244.07

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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.