Home / 43,819.34-65,746.86-20,431.40

Finding the Fourth Proportional to 43,819.34, 65,746.86 and 20,431.40

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Solution

The fourth proportional to 43,819.34, 65,746.86 and 20,431.40 is: 30,655.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,819.34 : 65,746.86 = 20,431.40 : x
  2. Step 2: Convert to fraction form
    43,819.34/65,746.86 = 20,431.40/x
  3. Step 3: Cross multiply
    43,819.34x = 65,746.86 × 20,431.40
  4. Step 4: Simplify right side
    43,819.34x = 1,343,300,395.40
  5. Step 5: Solve for x
    x = 1,343,300,395.40/43,819.34
  6. Step 6: Final answer
    x = 30,655.42

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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.