Home / 43,421.64-65,140.26-15,357.96

Finding the Fourth Proportional to 43,421.64, 65,140.26 and 15,357.96

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Solution

The fourth proportional to 43,421.64, 65,140.26 and 15,357.96 is: 23,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,421.64 : 65,140.26 = 15,357.96 : x
  2. Step 2: Convert to fraction form
    43,421.64/65,140.26 = 15,357.96/x
  3. Step 3: Cross multiply
    43,421.64x = 65,140.26 × 15,357.96
  4. Step 4: Simplify right side
    43,421.64x = 1,000,421,507.47
  5. Step 5: Solve for x
    x = 1,000,421,507.47/43,421.64
  6. Step 6: Final answer
    x = 23,039.70

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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.