Home / 18,878.06-28,299.40-6,389.35

Finding the Fourth Proportional to 18,878.06, 28,299.40 and 6,389.35

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Solution

The fourth proportional to 18,878.06, 28,299.40 and 6,389.35 is: 9,578.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.06 : 28,299.40 = 6,389.35 : x
  2. Step 2: Convert to fraction form
    18,878.06/28,299.40 = 6,389.35/x
  3. Step 3: Cross multiply
    18,878.06x = 28,299.40 × 6,389.35
  4. Step 4: Simplify right side
    18,878.06x = 180,814,684.67
  5. Step 5: Solve for x
    x = 180,814,684.67/18,878.06
  6. Step 6: Final answer
    x = 9,578.03

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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.