Home / 19,730.20-29,568.30-12,688.60

Finding the Fourth Proportional to 19,730.20, 29,568.30 and 12,688.60

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Solution

The fourth proportional to 19,730.20, 29,568.30 and 12,688.60 is: 19,015.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.20 : 29,568.30 = 12,688.60 : x
  2. Step 2: Convert to fraction form
    19,730.20/29,568.30 = 12,688.60/x
  3. Step 3: Cross multiply
    19,730.20x = 29,568.30 × 12,688.60
  4. Step 4: Simplify right side
    19,730.20x = 375,180,331.38
  5. Step 5: Solve for x
    x = 375,180,331.38/19,730.20
  6. Step 6: Final answer
    x = 19,015.54

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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.