Home / 12,257.78-16,915.81-6,668.82

Finding the Fourth Proportional to 12,257.78, 16,915.81 and 6,668.82

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Solution

The fourth proportional to 12,257.78, 16,915.81 and 6,668.82 is: 9,203.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257.78 : 16,915.81 = 6,668.82 : x
  2. Step 2: Convert to fraction form
    12,257.78/16,915.81 = 6,668.82/x
  3. Step 3: Cross multiply
    12,257.78x = 16,915.81 × 6,668.82
  4. Step 4: Simplify right side
    12,257.78x = 112,808,492.04
  5. Step 5: Solve for x
    x = 112,808,492.04/12,257.78
  6. Step 6: Final answer
    x = 9,203.01

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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.