Home / 12,980.80-19,471.20-8,833.60

Finding the Fourth Proportional to 12,980.80, 19,471.20 and 8,833.60

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Solution

The fourth proportional to 12,980.80, 19,471.20 and 8,833.60 is: 13,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,980.80 : 19,471.20 = 8,833.60 : x
  2. Step 2: Convert to fraction form
    12,980.80/19,471.20 = 8,833.60/x
  3. Step 3: Cross multiply
    12,980.80x = 19,471.20 × 8,833.60
  4. Step 4: Simplify right side
    12,980.80x = 172,000,792.32
  5. Step 5: Solve for x
    x = 172,000,792.32/12,980.80
  6. Step 6: Final answer
    x = 13,250.40

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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.