Home / 15,438.70-23,157.85-3,751.89

Finding the Fourth Proportional to 15,438.70, 23,157.85 and 3,751.89

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Solution

The fourth proportional to 15,438.70, 23,157.85 and 3,751.89 is: 5,627.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.70 : 23,157.85 = 3,751.89 : x
  2. Step 2: Convert to fraction form
    15,438.70/23,157.85 = 3,751.89/x
  3. Step 3: Cross multiply
    15,438.70x = 23,157.85 × 3,751.89
  4. Step 4: Simplify right side
    15,438.70x = 86,885,705.84
  5. Step 5: Solve for x
    x = 86,885,705.84/15,438.70
  6. Step 6: Final answer
    x = 5,627.79

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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.