Home / 28,539.18-39,381.93-15,961.50

Finding the Fourth Proportional to 28,539.18, 39,381.93 and 15,961.50

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Solution

The fourth proportional to 28,539.18, 39,381.93 and 15,961.50 is: 22,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.18 : 39,381.93 = 15,961.50 : x
  2. Step 2: Convert to fraction form
    28,539.18/39,381.93 = 15,961.50/x
  3. Step 3: Cross multiply
    28,539.18x = 39,381.93 × 15,961.50
  4. Step 4: Simplify right side
    28,539.18x = 628,594,675.70
  5. Step 5: Solve for x
    x = 628,594,675.70/28,539.18
  6. Step 6: Final answer
    x = 22,025.67

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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.