Home / 13,935.88-19,231.14-7,647.40

Finding the Fourth Proportional to 13,935.88, 19,231.14 and 7,647.40

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Solution

The fourth proportional to 13,935.88, 19,231.14 and 7,647.40 is: 10,553.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.88 : 19,231.14 = 7,647.40 : x
  2. Step 2: Convert to fraction form
    13,935.88/19,231.14 = 7,647.40/x
  3. Step 3: Cross multiply
    13,935.88x = 19,231.14 × 7,647.40
  4. Step 4: Simplify right side
    13,935.88x = 147,068,220.04
  5. Step 5: Solve for x
    x = 147,068,220.04/13,935.88
  6. Step 6: Final answer
    x = 10,553.21

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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.