Home / 12,078.39-18,114.08-4,681.20

Finding the Fourth Proportional to 12,078.39, 18,114.08 and 4,681.20

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Solution

The fourth proportional to 12,078.39, 18,114.08 and 4,681.20 is: 7,020.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.39 : 18,114.08 = 4,681.20 : x
  2. Step 2: Convert to fraction form
    12,078.39/18,114.08 = 4,681.20/x
  3. Step 3: Cross multiply
    12,078.39x = 18,114.08 × 4,681.20
  4. Step 4: Simplify right side
    12,078.39x = 84,795,607.89
  5. Step 5: Solve for x
    x = 84,795,607.89/12,078.39
  6. Step 6: Final answer
    x = 7,020.44

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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.