Home / 12,612.98-18,919.27-4,298.79

Finding the Fourth Proportional to 12,612.98, 18,919.27 and 4,298.79

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Solution

The fourth proportional to 12,612.98, 18,919.27 and 4,298.79 is: 6,448.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.98 : 18,919.27 = 4,298.79 : x
  2. Step 2: Convert to fraction form
    12,612.98/18,919.27 = 4,298.79/x
  3. Step 3: Cross multiply
    12,612.98x = 18,919.27 × 4,298.79
  4. Step 4: Simplify right side
    12,612.98x = 81,329,938.58
  5. Step 5: Solve for x
    x = 81,329,938.58/12,612.98
  6. Step 6: Final answer
    x = 6,448.11

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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.