Home / 12,270.08-16,933.12-6,681.28

Finding the Fourth Proportional to 12,270.08, 16,933.12 and 6,681.28

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Solution

The fourth proportional to 12,270.08, 16,933.12 and 6,681.28 is: 9,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.08 : 16,933.12 = 6,681.28 : x
  2. Step 2: Convert to fraction form
    12,270.08/16,933.12 = 6,681.28/x
  3. Step 3: Cross multiply
    12,270.08x = 16,933.12 × 6,681.28
  4. Step 4: Simplify right side
    12,270.08x = 113,134,915.99
  5. Step 5: Solve for x
    x = 113,134,915.99/12,270.08
  6. Step 6: Final answer
    x = 9,220.39

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1.5x scale

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.