Home / 28,995.54-39,986.29-18,920.76

Finding the Fourth Proportional to 28,995.54, 39,986.29 and 18,920.76

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Solution

The fourth proportional to 28,995.54, 39,986.29 and 18,920.76 is: 26,092.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.54 : 39,986.29 = 18,920.76 : x
  2. Step 2: Convert to fraction form
    28,995.54/39,986.29 = 18,920.76/x
  3. Step 3: Cross multiply
    28,995.54x = 39,986.29 × 18,920.76
  4. Step 4: Simplify right side
    28,995.54x = 756,570,996.38
  5. Step 5: Solve for x
    x = 756,570,996.38/28,995.54
  6. Step 6: Final answer
    x = 26,092.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.