Home / 28,662.06-39,572.91-21,935.67

Finding the Fourth Proportional to 28,662.06, 39,572.91 and 21,935.67

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Solution

The fourth proportional to 28,662.06, 39,572.91 and 21,935.67 is: 30,285.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.06 : 39,572.91 = 21,935.67 : x
  2. Step 2: Convert to fraction form
    28,662.06/39,572.91 = 21,935.67/x
  3. Step 3: Cross multiply
    28,662.06x = 39,572.91 × 21,935.67
  4. Step 4: Simplify right side
    28,662.06x = 868,058,294.70
  5. Step 5: Solve for x
    x = 868,058,294.70/28,662.06
  6. Step 6: Final answer
    x = 30,285.97

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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.