Home / 12,749.78-19,113.30-4,956.80

Finding the Fourth Proportional to 12,749.78, 19,113.30 and 4,956.80

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Solution

The fourth proportional to 12,749.78, 19,113.30 and 4,956.80 is: 7,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.78 : 19,113.30 = 4,956.80 : x
  2. Step 2: Convert to fraction form
    12,749.78/19,113.30 = 4,956.80/x
  3. Step 3: Cross multiply
    12,749.78x = 19,113.30 × 4,956.80
  4. Step 4: Simplify right side
    12,749.78x = 94,740,805.44
  5. Step 5: Solve for x
    x = 94,740,805.44/12,749.78
  6. Step 6: Final answer
    x = 7,430.78

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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.