Home / 18,705.02-28,041.10-7,621.03

Finding the Fourth Proportional to 18,705.02, 28,041.10 and 7,621.03

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Solution

The fourth proportional to 18,705.02, 28,041.10 and 7,621.03 is: 11,424.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.02 : 28,041.10 = 7,621.03 : x
  2. Step 2: Convert to fraction form
    18,705.02/28,041.10 = 7,621.03/x
  3. Step 3: Cross multiply
    18,705.02x = 28,041.10 × 7,621.03
  4. Step 4: Simplify right side
    18,705.02x = 213,702,064.33
  5. Step 5: Solve for x
    x = 213,702,064.33/18,705.02
  6. Step 6: Final answer
    x = 11,424.85

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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.