Home / 39,485.05-54,487.72-21,580.67

Finding the Fourth Proportional to 39,485.05, 54,487.72 and 21,580.67

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Solution

The fourth proportional to 39,485.05, 54,487.72 and 21,580.67 is: 29,780.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,485.05 : 54,487.72 = 21,580.67 : x
  2. Step 2: Convert to fraction form
    39,485.05/54,487.72 = 21,580.67/x
  3. Step 3: Cross multiply
    39,485.05x = 54,487.72 × 21,580.67
  4. Step 4: Simplify right side
    39,485.05x = 1,175,881,504.37
  5. Step 5: Solve for x
    x = 1,175,881,504.37/39,485.05
  6. Step 6: Final answer
    x = 29,780.42

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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.