Home / 18,744.75-28,095.26-10,420.79

Finding the Fourth Proportional to 18,744.75, 28,095.26 and 10,420.79

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Solution

The fourth proportional to 18,744.75, 28,095.26 and 10,420.79 is: 15,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.75 : 28,095.26 = 10,420.79 : x
  2. Step 2: Convert to fraction form
    18,744.75/28,095.26 = 10,420.79/x
  3. Step 3: Cross multiply
    18,744.75x = 28,095.26 × 10,420.79
  4. Step 4: Simplify right side
    18,744.75x = 292,774,611.88
  5. Step 5: Solve for x
    x = 292,774,611.88/18,744.75
  6. Step 6: Final answer
    x = 15,619.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.