Home / 21,984.50-30,338.98-15,707.54

Finding the Fourth Proportional to 21,984.50, 30,338.98 and 15,707.54

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Solution

The fourth proportional to 21,984.50, 30,338.98 and 15,707.54 is: 21,676.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.50 : 30,338.98 = 15,707.54 : x
  2. Step 2: Convert to fraction form
    21,984.50/30,338.98 = 15,707.54/x
  3. Step 3: Cross multiply
    21,984.50x = 30,338.98 × 15,707.54
  4. Step 4: Simplify right side
    21,984.50x = 476,550,741.91
  5. Step 5: Solve for x
    x = 476,550,741.91/21,984.50
  6. Step 6: Final answer
    x = 21,676.67

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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.