Home / 12,321.86-18,498.74-10,578.20

Finding the Fourth Proportional to 12,321.86, 18,498.74 and 10,578.20

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Solution

The fourth proportional to 12,321.86, 18,498.74 and 10,578.20 is: 15,880.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.86 : 18,498.74 = 10,578.20 : x
  2. Step 2: Convert to fraction form
    12,321.86/18,498.74 = 10,578.20/x
  3. Step 3: Cross multiply
    12,321.86x = 18,498.74 × 10,578.20
  4. Step 4: Simplify right side
    12,321.86x = 195,683,226.08
  5. Step 5: Solve for x
    x = 195,683,226.08/12,321.86
  6. Step 6: Final answer
    x = 15,880.99

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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.