Home / 12,819.48-19,116.12-12,362.64

Finding the Fourth Proportional to 12,819.48, 19,116.12 and 12,362.64

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Solution

The fourth proportional to 12,819.48, 19,116.12 and 12,362.64 is: 18,434.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.48 : 19,116.12 = 12,362.64 : x
  2. Step 2: Convert to fraction form
    12,819.48/19,116.12 = 12,362.64/x
  3. Step 3: Cross multiply
    12,819.48x = 19,116.12 × 12,362.64
  4. Step 4: Simplify right side
    12,819.48x = 236,325,709.76
  5. Step 5: Solve for x
    x = 236,325,709.76/12,819.48
  6. Step 6: Final answer
    x = 18,434.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.