Home / 19,600.08-29,400.04-7,120.08

Finding the Fourth Proportional to 19,600.08, 29,400.04 and 7,120.08

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Solution

The fourth proportional to 19,600.08, 29,400.04 and 7,120.08 is: 10,680.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,600.08 : 29,400.04 = 7,120.08 : x
  2. Step 2: Convert to fraction form
    19,600.08/29,400.04 = 7,120.08/x
  3. Step 3: Cross multiply
    19,600.08x = 29,400.04 × 7,120.08
  4. Step 4: Simplify right side
    19,600.08x = 209,330,636.80
  5. Step 5: Solve for x
    x = 209,330,636.80/19,600.08
  6. Step 6: Final answer
    x = 10,680.09

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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.