Home / 12,730.80-19,096.20-11,345.70

Finding the Fourth Proportional to 12,730.80, 19,096.20 and 11,345.70

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Solution

The fourth proportional to 12,730.80, 19,096.20 and 11,345.70 is: 17,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.80 : 19,096.20 = 11,345.70 : x
  2. Step 2: Convert to fraction form
    12,730.80/19,096.20 = 11,345.70/x
  3. Step 3: Cross multiply
    12,730.80x = 19,096.20 × 11,345.70
  4. Step 4: Simplify right side
    12,730.80x = 216,659,756.34
  5. Step 5: Solve for x
    x = 216,659,756.34/12,730.80
  6. Step 6: Final answer
    x = 17,018.55

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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.