Home / 34,372.87-47,430.34-20,939.25

Finding the Fourth Proportional to 34,372.87, 47,430.34 and 20,939.25

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Solution

The fourth proportional to 34,372.87, 47,430.34 and 20,939.25 is: 28,893.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,372.87 : 47,430.34 = 20,939.25 : x
  2. Step 2: Convert to fraction form
    34,372.87/47,430.34 = 20,939.25/x
  3. Step 3: Cross multiply
    34,372.87x = 47,430.34 × 20,939.25
  4. Step 4: Simplify right side
    34,372.87x = 993,155,746.85
  5. Step 5: Solve for x
    x = 993,155,746.85/34,372.87
  6. Step 6: Final answer
    x = 28,893.59

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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.