Home / 12,966.60-19,449.90-8,819.40

Finding the Fourth Proportional to 12,966.60, 19,449.90 and 8,819.40

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Solution

The fourth proportional to 12,966.60, 19,449.90 and 8,819.40 is: 13,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,966.60 : 19,449.90 = 8,819.40 : x
  2. Step 2: Convert to fraction form
    12,966.60/19,449.90 = 8,819.40/x
  3. Step 3: Cross multiply
    12,966.60x = 19,449.90 × 8,819.40
  4. Step 4: Simplify right side
    12,966.60x = 171,536,448.06
  5. Step 5: Solve for x
    x = 171,536,448.06/12,966.60
  6. Step 6: Final answer
    x = 13,229.10

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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.