Home / 13,883.94-19,139.90-9,898.13

Finding the Fourth Proportional to 13,883.94, 19,139.90 and 9,898.13

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Solution

The fourth proportional to 13,883.94, 19,139.90 and 9,898.13 is: 13,645.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.94 : 19,139.90 = 9,898.13 : x
  2. Step 2: Convert to fraction form
    13,883.94/19,139.90 = 9,898.13/x
  3. Step 3: Cross multiply
    13,883.94x = 19,139.90 × 9,898.13
  4. Step 4: Simplify right side
    13,883.94x = 189,449,216.75
  5. Step 5: Solve for x
    x = 189,449,216.75/13,883.94
  6. Step 6: Final answer
    x = 13,645.21

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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.