Home / 12,291.40-16,969.14-8,106.92

Finding the Fourth Proportional to 12,291.40, 16,969.14 and 8,106.92

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Solution

The fourth proportional to 12,291.40, 16,969.14 and 8,106.92 is: 11,192.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.40 : 16,969.14 = 8,106.92 : x
  2. Step 2: Convert to fraction form
    12,291.40/16,969.14 = 8,106.92/x
  3. Step 3: Cross multiply
    12,291.40x = 16,969.14 × 8,106.92
  4. Step 4: Simplify right side
    12,291.40x = 137,567,460.45
  5. Step 5: Solve for x
    x = 137,567,460.45/12,291.40
  6. Step 6: Final answer
    x = 11,192.17

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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.