Home / 30,643.20-45,963.55-8,456.01

Finding the Fourth Proportional to 30,643.20, 45,963.55 and 8,456.01

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Solution

The fourth proportional to 30,643.20, 45,963.55 and 8,456.01 is: 12,683.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643.20 : 45,963.55 = 8,456.01 : x
  2. Step 2: Convert to fraction form
    30,643.20/45,963.55 = 8,456.01/x
  3. Step 3: Cross multiply
    30,643.20x = 45,963.55 × 8,456.01
  4. Step 4: Simplify right side
    30,643.20x = 388,668,238.44
  5. Step 5: Solve for x
    x = 388,668,238.44/30,643.20
  6. Step 6: Final answer
    x = 12,683.67

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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.