Home / 13,991.61-19,306.38-7,940.91

Finding the Fourth Proportional to 13,991.61, 19,306.38 and 7,940.91

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Solution

The fourth proportional to 13,991.61, 19,306.38 and 7,940.91 is: 10,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.61 : 19,306.38 = 7,940.91 : x
  2. Step 2: Convert to fraction form
    13,991.61/19,306.38 = 7,940.91/x
  3. Step 3: Cross multiply
    13,991.61x = 19,306.38 × 7,940.91
  4. Step 4: Simplify right side
    13,991.61x = 153,310,226.01
  5. Step 5: Solve for x
    x = 153,310,226.01/13,991.61
  6. Step 6: Final answer
    x = 10,957.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.