Home / 12,749.79-19,136.84-7,829.04

Finding the Fourth Proportional to 12,749.79, 19,136.84 and 7,829.04

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Solution

The fourth proportional to 12,749.79, 19,136.84 and 7,829.04 is: 11,751.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.79 : 19,136.84 = 7,829.04 : x
  2. Step 2: Convert to fraction form
    12,749.79/19,136.84 = 7,829.04/x
  3. Step 3: Cross multiply
    12,749.79x = 19,136.84 × 7,829.04
  4. Step 4: Simplify right side
    12,749.79x = 149,823,085.83
  5. Step 5: Solve for x
    x = 149,823,085.83/12,749.79
  6. Step 6: Final answer
    x = 11,751.02

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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.