Home / 13,121.90-19,623.01-9,792.50

Finding the Fourth Proportional to 13,121.90, 19,623.01 and 9,792.50

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Solution

The fourth proportional to 13,121.90, 19,623.01 and 9,792.50 is: 14,644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.90 : 19,623.01 = 9,792.50 : x
  2. Step 2: Convert to fraction form
    13,121.90/19,623.01 = 9,792.50/x
  3. Step 3: Cross multiply
    13,121.90x = 19,623.01 × 9,792.50
  4. Step 4: Simplify right side
    13,121.90x = 192,158,221.19
  5. Step 5: Solve for x
    x = 192,158,221.19/13,121.90
  6. Step 6: Final answer
    x = 14,644.09

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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.