Home / 13,890.93-19,169.29-7,922.70

Finding the Fourth Proportional to 13,890.93, 19,169.29 and 7,922.70

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Solution

The fourth proportional to 13,890.93, 19,169.29 and 7,922.70 is: 10,933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.93 : 19,169.29 = 7,922.70 : x
  2. Step 2: Convert to fraction form
    13,890.93/19,169.29 = 7,922.70/x
  3. Step 3: Cross multiply
    13,890.93x = 19,169.29 × 7,922.70
  4. Step 4: Simplify right side
    13,890.93x = 151,872,398.42
  5. Step 5: Solve for x
    x = 151,872,398.42/13,890.93
  6. Step 6: Final answer
    x = 10,933.21

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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.