Home / 12,270.24-16,932.80-6,681.20

Finding the Fourth Proportional to 12,270.24, 16,932.80 and 6,681.20

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Solution

The fourth proportional to 12,270.24, 16,932.80 and 6,681.20 is: 9,219.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.24 : 16,932.80 = 6,681.20 : x
  2. Step 2: Convert to fraction form
    12,270.24/16,932.80 = 6,681.20/x
  3. Step 3: Cross multiply
    12,270.24x = 16,932.80 × 6,681.20
  4. Step 4: Simplify right side
    12,270.24x = 113,131,423.36
  5. Step 5: Solve for x
    x = 113,131,423.36/12,270.24
  6. Step 6: Final answer
    x = 9,219.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.