Home / 30,871.22-46,317.93-12,140.87

Finding the Fourth Proportional to 30,871.22, 46,317.93 and 12,140.87

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Solution

The fourth proportional to 30,871.22, 46,317.93 and 12,140.87 is: 18,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.22 : 46,317.93 = 12,140.87 : x
  2. Step 2: Convert to fraction form
    30,871.22/46,317.93 = 12,140.87/x
  3. Step 3: Cross multiply
    30,871.22x = 46,317.93 × 12,140.87
  4. Step 4: Simplify right side
    30,871.22x = 562,339,966.80
  5. Step 5: Solve for x
    x = 562,339,966.80/30,871.22
  6. Step 6: Final answer
    x = 18,215.67

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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.