Home / 12,749.16-17,578.62-10,977.72

Finding the Fourth Proportional to 12,749.16, 17,578.62 and 10,977.72

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Solution

The fourth proportional to 12,749.16, 17,578.62 and 10,977.72 is: 15,136.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.16 : 17,578.62 = 10,977.72 : x
  2. Step 2: Convert to fraction form
    12,749.16/17,578.62 = 10,977.72/x
  3. Step 3: Cross multiply
    12,749.16x = 17,578.62 × 10,977.72
  4. Step 4: Simplify right side
    12,749.16x = 192,973,168.35
  5. Step 5: Solve for x
    x = 192,973,168.35/12,749.16
  6. Step 6: Final answer
    x = 15,136.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.