Home / 19,990.37-29,980.32-5,946.62

Finding the Fourth Proportional to 19,990.37, 29,980.32 and 5,946.62

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Solution

The fourth proportional to 19,990.37, 29,980.32 and 5,946.62 is: 8,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.37 : 29,980.32 = 5,946.62 : x
  2. Step 2: Convert to fraction form
    19,990.37/29,980.32 = 5,946.62/x
  3. Step 3: Cross multiply
    19,990.37x = 29,980.32 × 5,946.62
  4. Step 4: Simplify right side
    19,990.37x = 178,281,420.62
  5. Step 5: Solve for x
    x = 178,281,420.62/19,990.37
  6. Step 6: Final answer
    x = 8,918.37

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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.