Home / 12,718.48-19,080.88-8,977.56

Finding the Fourth Proportional to 12,718.48, 19,080.88 and 8,977.56

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Solution

The fourth proportional to 12,718.48, 19,080.88 and 8,977.56 is: 13,468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.48 : 19,080.88 = 8,977.56 : x
  2. Step 2: Convert to fraction form
    12,718.48/19,080.88 = 8,977.56/x
  3. Step 3: Cross multiply
    12,718.48x = 19,080.88 × 8,977.56
  4. Step 4: Simplify right side
    12,718.48x = 171,299,745.05
  5. Step 5: Solve for x
    x = 171,299,745.05/12,718.48
  6. Step 6: Final answer
    x = 13,468.57

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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.