Home / 20,487.36-30,730.86-6,636.36

Finding the Fourth Proportional to 20,487.36, 30,730.86 and 6,636.36

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Solution

The fourth proportional to 20,487.36, 30,730.86 and 6,636.36 is: 9,954.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.36 : 30,730.86 = 6,636.36 : x
  2. Step 2: Convert to fraction form
    20,487.36/30,730.86 = 6,636.36/x
  3. Step 3: Cross multiply
    20,487.36x = 30,730.86 × 6,636.36
  4. Step 4: Simplify right side
    20,487.36x = 203,941,050.07
  5. Step 5: Solve for x
    x = 203,941,050.07/20,487.36
  6. Step 6: Final answer
    x = 9,954.48

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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.