Home / 12,618.25-18,929.80-4,298.74

Finding the Fourth Proportional to 12,618.25, 18,929.80 and 4,298.74

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Solution

The fourth proportional to 12,618.25, 18,929.80 and 4,298.74 is: 6,448.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.25 : 18,929.80 = 4,298.74 : x
  2. Step 2: Convert to fraction form
    12,618.25/18,929.80 = 4,298.74/x
  3. Step 3: Cross multiply
    12,618.25x = 18,929.80 × 4,298.74
  4. Step 4: Simplify right side
    12,618.25x = 81,374,246.50
  5. Step 5: Solve for x
    x = 81,374,246.50/12,618.25
  6. Step 6: Final answer
    x = 6,448.93

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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.