Home / 28,517.79-42,781.55-8,792.67

Finding the Fourth Proportional to 28,517.79, 42,781.55 and 8,792.67

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Solution

The fourth proportional to 28,517.79, 42,781.55 and 8,792.67 is: 13,190.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.79 : 42,781.55 = 8,792.67 : x
  2. Step 2: Convert to fraction form
    28,517.79/42,781.55 = 8,792.67/x
  3. Step 3: Cross multiply
    28,517.79x = 42,781.55 × 8,792.67
  4. Step 4: Simplify right side
    28,517.79x = 376,164,051.24
  5. Step 5: Solve for x
    x = 376,164,051.24/28,517.79
  6. Step 6: Final answer
    x = 13,190.50

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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.