Home / 12,631.86-18,948.69-3,865.64

Finding the Fourth Proportional to 12,631.86, 18,948.69 and 3,865.64

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Solution

The fourth proportional to 12,631.86, 18,948.69 and 3,865.64 is: 5,798.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.86 : 18,948.69 = 3,865.64 : x
  2. Step 2: Convert to fraction form
    12,631.86/18,948.69 = 3,865.64/x
  3. Step 3: Cross multiply
    12,631.86x = 18,948.69 × 3,865.64
  4. Step 4: Simplify right side
    12,631.86x = 73,248,719.27
  5. Step 5: Solve for x
    x = 73,248,719.27/12,631.86
  6. Step 6: Final answer
    x = 5,798.73

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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.