Home / 21,062,949.40-31,594,424.10-18,669,496.60

Finding the Fourth Proportional to 21,062,949.40, 31,594,424.10 and 18,669,496.60

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Solution

The fourth proportional to 21,062,949.40, 31,594,424.10 and 18,669,496.60 is: 28,004,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062,949.40 : 31,594,424.10 = 18,669,496.60 : x
  2. Step 2: Convert to fraction form
    21,062,949.40/31,594,424.10 = 18,669,496.60/x
  3. Step 3: Cross multiply
    21,062,949.40x = 31,594,424.10 × 18,669,496.60
  4. Step 4: Simplify right side
    21,062,949.40x = 589,851,993,313,908.12
  5. Step 5: Solve for x
    x = 589,851,993,313,908.12/21,062,949.40
  6. Step 6: Final answer
    x = 28,004,244.90

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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.