Home / 19,622.40-29,433.60-7,929.60

Finding the Fourth Proportional to 19,622.40, 29,433.60 and 7,929.60

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Solution

The fourth proportional to 19,622.40, 29,433.60 and 7,929.60 is: 11,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,622.40 : 29,433.60 = 7,929.60 : x
  2. Step 2: Convert to fraction form
    19,622.40/29,433.60 = 7,929.60/x
  3. Step 3: Cross multiply
    19,622.40x = 29,433.60 × 7,929.60
  4. Step 4: Simplify right side
    19,622.40x = 233,396,674.56
  5. Step 5: Solve for x
    x = 233,396,674.56/19,622.40
  6. Step 6: Final answer
    x = 11,894.40

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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.