Home / 12,479.64-18,720.18-4,688.52

Finding the Fourth Proportional to 12,479.64, 18,720.18 and 4,688.52

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Solution

The fourth proportional to 12,479.64, 18,720.18 and 4,688.52 is: 7,033.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.64 : 18,720.18 = 4,688.52 : x
  2. Step 2: Convert to fraction form
    12,479.64/18,720.18 = 4,688.52/x
  3. Step 3: Cross multiply
    12,479.64x = 18,720.18 × 4,688.52
  4. Step 4: Simplify right side
    12,479.64x = 87,769,938.33
  5. Step 5: Solve for x
    x = 87,769,938.33/12,479.64
  6. Step 6: Final answer
    x = 7,033.05

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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.