Home / 12,211.88-16,852.58-7,176.21

Finding the Fourth Proportional to 12,211.88, 16,852.58 and 7,176.21

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Solution

The fourth proportional to 12,211.88, 16,852.58 and 7,176.21 is: 9,903.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.88 : 16,852.58 = 7,176.21 : x
  2. Step 2: Convert to fraction form
    12,211.88/16,852.58 = 7,176.21/x
  3. Step 3: Cross multiply
    12,211.88x = 16,852.58 × 7,176.21
  4. Step 4: Simplify right side
    12,211.88x = 120,937,617.24
  5. Step 5: Solve for x
    x = 120,937,617.24/12,211.88
  6. Step 6: Final answer
    x = 9,903.28

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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.