Home / 28,705.23-39,611.99-15,958.40

Finding the Fourth Proportional to 28,705.23, 39,611.99 and 15,958.40

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Solution

The fourth proportional to 28,705.23, 39,611.99 and 15,958.40 is: 22,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.23 : 39,611.99 = 15,958.40 : x
  2. Step 2: Convert to fraction form
    28,705.23/39,611.99 = 15,958.40/x
  3. Step 3: Cross multiply
    28,705.23x = 39,611.99 × 15,958.40
  4. Step 4: Simplify right side
    28,705.23x = 632,143,703.36
  5. Step 5: Solve for x
    x = 632,143,703.36/28,705.23
  6. Step 6: Final answer
    x = 22,021.90

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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.