Home / 43,889.43-65,840.64-12,720.63

Finding the Fourth Proportional to 43,889.43, 65,840.64 and 12,720.63

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Solution

The fourth proportional to 43,889.43, 65,840.64 and 12,720.63 is: 19,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,889.43 : 65,840.64 = 12,720.63 : x
  2. Step 2: Convert to fraction form
    43,889.43/65,840.64 = 12,720.63/x
  3. Step 3: Cross multiply
    43,889.43x = 65,840.64 × 12,720.63
  4. Step 4: Simplify right side
    43,889.43x = 837,534,420.40
  5. Step 5: Solve for x
    x = 837,534,420.40/43,889.43
  6. Step 6: Final answer
    x = 19,082.83

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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.