Home / 20,479.96-28,266.78-12,097.72

Finding the Fourth Proportional to 20,479.96, 28,266.78 and 12,097.72

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Solution

The fourth proportional to 20,479.96, 28,266.78 and 12,097.72 is: 16,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.96 : 28,266.78 = 12,097.72 : x
  2. Step 2: Convert to fraction form
    20,479.96/28,266.78 = 12,097.72/x
  3. Step 3: Cross multiply
    20,479.96x = 28,266.78 × 12,097.72
  4. Step 4: Simplify right side
    20,479.96x = 341,963,589.74
  5. Step 5: Solve for x
    x = 341,963,589.74/20,479.96
  6. Step 6: Final answer
    x = 16,697.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.