Home / 28,477.40-39,299.40-15,902.16

Finding the Fourth Proportional to 28,477.40, 39,299.40 and 15,902.16

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Solution

The fourth proportional to 28,477.40, 39,299.40 and 15,902.16 is: 21,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,477.40 : 39,299.40 = 15,902.16 : x
  2. Step 2: Convert to fraction form
    28,477.40/39,299.40 = 15,902.16/x
  3. Step 3: Cross multiply
    28,477.40x = 39,299.40 × 15,902.16
  4. Step 4: Simplify right side
    28,477.40x = 624,945,346.70
  5. Step 5: Solve for x
    x = 624,945,346.70/28,477.40
  6. Step 6: Final answer
    x = 21,945.31

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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.