Home / 28,705.98-39,609.47-15,958.81

Finding the Fourth Proportional to 28,705.98, 39,609.47 and 15,958.81

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Solution

The fourth proportional to 28,705.98, 39,609.47 and 15,958.81 is: 22,020.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.98 : 39,609.47 = 15,958.81 : x
  2. Step 2: Convert to fraction form
    28,705.98/39,609.47 = 15,958.81/x
  3. Step 3: Cross multiply
    28,705.98x = 39,609.47 × 15,958.81
  4. Step 4: Simplify right side
    28,705.98x = 632,120,005.93
  5. Step 5: Solve for x
    x = 632,120,005.93/28,705.98
  6. Step 6: Final answer
    x = 22,020.50

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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.