Home / 12,819.30-19,228.95-5,421.84

Finding the Fourth Proportional to 12,819.30, 19,228.95 and 5,421.84

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Solution

The fourth proportional to 12,819.30, 19,228.95 and 5,421.84 is: 8,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.30 : 19,228.95 = 5,421.84 : x
  2. Step 2: Convert to fraction form
    12,819.30/19,228.95 = 5,421.84/x
  3. Step 3: Cross multiply
    12,819.30x = 19,228.95 × 5,421.84
  4. Step 4: Simplify right side
    12,819.30x = 104,256,290.27
  5. Step 5: Solve for x
    x = 104,256,290.27/12,819.30
  6. Step 6: Final answer
    x = 8,132.76

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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.