Home / 12,784.21-19,178.10-4,019.80

Finding the Fourth Proportional to 12,784.21, 19,178.10 and 4,019.80

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Solution

The fourth proportional to 12,784.21, 19,178.10 and 4,019.80 is: 6,030.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784.21 : 19,178.10 = 4,019.80 : x
  2. Step 2: Convert to fraction form
    12,784.21/19,178.10 = 4,019.80/x
  3. Step 3: Cross multiply
    12,784.21x = 19,178.10 × 4,019.80
  4. Step 4: Simplify right side
    12,784.21x = 77,092,126.38
  5. Step 5: Solve for x
    x = 77,092,126.38/12,784.21
  6. Step 6: Final answer
    x = 6,030.26

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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.