Home / 28,220.76-42,331.23-7,160.82

Finding the Fourth Proportional to 28,220.76, 42,331.23 and 7,160.82

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Solution

The fourth proportional to 28,220.76, 42,331.23 and 7,160.82 is: 10,741.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.76 : 42,331.23 = 7,160.82 : x
  2. Step 2: Convert to fraction form
    28,220.76/42,331.23 = 7,160.82/x
  3. Step 3: Cross multiply
    28,220.76x = 42,331.23 × 7,160.82
  4. Step 4: Simplify right side
    28,220.76x = 303,126,318.41
  5. Step 5: Solve for x
    x = 303,126,318.41/28,220.76
  6. Step 6: Final answer
    x = 10,741.25

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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.