Home / 11,895.40-16,420.98-8,554.60

Finding the Fourth Proportional to 11,895.40, 16,420.98 and 8,554.60

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Solution

The fourth proportional to 11,895.40, 16,420.98 and 8,554.60 is: 11,809.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.40 : 16,420.98 = 8,554.60 : x
  2. Step 2: Convert to fraction form
    11,895.40/16,420.98 = 8,554.60/x
  3. Step 3: Cross multiply
    11,895.40x = 16,420.98 × 8,554.60
  4. Step 4: Simplify right side
    11,895.40x = 140,474,915.51
  5. Step 5: Solve for x
    x = 140,474,915.51/11,895.40
  6. Step 6: Final answer
    x = 11,809.18

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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.