Home / 12,758.50-19,137.75-4,972.78

Finding the Fourth Proportional to 12,758.50, 19,137.75 and 4,972.78

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Solution

The fourth proportional to 12,758.50, 19,137.75 and 4,972.78 is: 7,459.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.50 : 19,137.75 = 4,972.78 : x
  2. Step 2: Convert to fraction form
    12,758.50/19,137.75 = 4,972.78/x
  3. Step 3: Cross multiply
    12,758.50x = 19,137.75 × 4,972.78
  4. Step 4: Simplify right side
    12,758.50x = 95,167,820.45
  5. Step 5: Solve for x
    x = 95,167,820.45/12,758.50
  6. Step 6: Final answer
    x = 7,459.17

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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.