Home / 12,210.40-16,852.30-7,175.86

Finding the Fourth Proportional to 12,210.40, 16,852.30 and 7,175.86

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Solution

The fourth proportional to 12,210.40, 16,852.30 and 7,175.86 is: 9,903.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.40 : 16,852.30 = 7,175.86 : x
  2. Step 2: Convert to fraction form
    12,210.40/16,852.30 = 7,175.86/x
  3. Step 3: Cross multiply
    12,210.40x = 16,852.30 × 7,175.86
  4. Step 4: Simplify right side
    12,210.40x = 120,929,625.34
  5. Step 5: Solve for x
    x = 120,929,625.34/12,210.40
  6. Step 6: Final answer
    x = 9,903.83

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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.