Home / 13,556.97-18,705.40-7,888.29

Finding the Fourth Proportional to 13,556.97, 18,705.40 and 7,888.29

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Solution

The fourth proportional to 13,556.97, 18,705.40 and 7,888.29 is: 10,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,556.97 : 18,705.40 = 7,888.29 : x
  2. Step 2: Convert to fraction form
    13,556.97/18,705.40 = 7,888.29/x
  3. Step 3: Cross multiply
    13,556.97x = 18,705.40 × 7,888.29
  4. Step 4: Simplify right side
    13,556.97x = 147,553,529.90
  5. Step 5: Solve for x
    x = 147,553,529.90/13,556.97
  6. Step 6: Final answer
    x = 10,883.96

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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.