Home / 28,170.56-42,258.15-9,450.77

Finding the Fourth Proportional to 28,170.56, 42,258.15 and 9,450.77

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Solution

The fourth proportional to 28,170.56, 42,258.15 and 9,450.77 is: 14,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.56 : 42,258.15 = 9,450.77 : x
  2. Step 2: Convert to fraction form
    28,170.56/42,258.15 = 9,450.77/x
  3. Step 3: Cross multiply
    28,170.56x = 42,258.15 × 9,450.77
  4. Step 4: Simplify right side
    28,170.56x = 399,372,056.28
  5. Step 5: Solve for x
    x = 399,372,056.28/28,170.56
  6. Step 6: Final answer
    x = 14,176.93

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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.