Home / 12,585.02-18,880.14-5,190.02

Finding the Fourth Proportional to 12,585.02, 18,880.14 and 5,190.02

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Solution

The fourth proportional to 12,585.02, 18,880.14 and 5,190.02 is: 7,786.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.02 : 18,880.14 = 5,190.02 : x
  2. Step 2: Convert to fraction form
    12,585.02/18,880.14 = 5,190.02/x
  3. Step 3: Cross multiply
    12,585.02x = 18,880.14 × 5,190.02
  4. Step 4: Simplify right side
    12,585.02x = 97,988,304.20
  5. Step 5: Solve for x
    x = 97,988,304.20/12,585.02
  6. Step 6: Final answer
    x = 7,786.11

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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.