Home / 28,290.96-42,436.68-8,571.06

Finding the Fourth Proportional to 28,290.96, 42,436.68 and 8,571.06

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Solution

The fourth proportional to 28,290.96, 42,436.68 and 8,571.06 is: 12,856.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.96 : 42,436.68 = 8,571.06 : x
  2. Step 2: Convert to fraction form
    28,290.96/42,436.68 = 8,571.06/x
  3. Step 3: Cross multiply
    28,290.96x = 42,436.68 × 8,571.06
  4. Step 4: Simplify right side
    28,290.96x = 363,727,330.48
  5. Step 5: Solve for x
    x = 363,727,330.48/28,290.96
  6. Step 6: Final answer
    x = 12,856.66

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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.