Home / 12,578.93-18,851.37-4,783.49

Finding the Fourth Proportional to 12,578.93, 18,851.37 and 4,783.49

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Solution

The fourth proportional to 12,578.93, 18,851.37 and 4,783.49 is: 7,168.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.93 : 18,851.37 = 4,783.49 : x
  2. Step 2: Convert to fraction form
    12,578.93/18,851.37 = 4,783.49/x
  3. Step 3: Cross multiply
    12,578.93x = 18,851.37 × 4,783.49
  4. Step 4: Simplify right side
    12,578.93x = 90,175,298.38
  5. Step 5: Solve for x
    x = 90,175,298.38/12,578.93
  6. Step 6: Final answer
    x = 7,168.76

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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.