Home / 12,261.40-16,922.64-6,955.12

Finding the Fourth Proportional to 12,261.40, 16,922.64 and 6,955.12

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Solution

The fourth proportional to 12,261.40, 16,922.64 and 6,955.12 is: 9,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.40 : 16,922.64 = 6,955.12 : x
  2. Step 2: Convert to fraction form
    12,261.40/16,922.64 = 6,955.12/x
  3. Step 3: Cross multiply
    12,261.40x = 16,922.64 × 6,955.12
  4. Step 4: Simplify right side
    12,261.40x = 117,698,991.92
  5. Step 5: Solve for x
    x = 117,698,991.92/12,261.40
  6. Step 6: Final answer
    x = 9,599.15

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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.