Home / 28,490.61-42,740.78-8,768.73

Finding the Fourth Proportional to 28,490.61, 42,740.78 and 8,768.73

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Solution

The fourth proportional to 28,490.61, 42,740.78 and 8,768.73 is: 13,154.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.61 : 42,740.78 = 8,768.73 : x
  2. Step 2: Convert to fraction form
    28,490.61/42,740.78 = 8,768.73/x
  3. Step 3: Cross multiply
    28,490.61x = 42,740.78 × 8,768.73
  4. Step 4: Simplify right side
    28,490.61x = 374,782,359.81
  5. Step 5: Solve for x
    x = 374,782,359.81/28,490.61
  6. Step 6: Final answer
    x = 13,154.59

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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.