Home / 13,938.91-19,230.97-7,966.35

Finding the Fourth Proportional to 13,938.91, 19,230.97 and 7,966.35

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Solution

The fourth proportional to 13,938.91, 19,230.97 and 7,966.35 is: 10,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.91 : 19,230.97 = 7,966.35 : x
  2. Step 2: Convert to fraction form
    13,938.91/19,230.97 = 7,966.35/x
  3. Step 3: Cross multiply
    13,938.91x = 19,230.97 × 7,966.35
  4. Step 4: Simplify right side
    13,938.91x = 153,200,637.86
  5. Step 5: Solve for x
    x = 153,200,637.86/13,938.91
  6. Step 6: Final answer
    x = 10,990.86

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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.