Home / 12,127.47-16,733.70-6,821.43

Finding the Fourth Proportional to 12,127.47, 16,733.70 and 6,821.43

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Solution

The fourth proportional to 12,127.47, 16,733.70 and 6,821.43 is: 9,412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.47 : 16,733.70 = 6,821.43 : x
  2. Step 2: Convert to fraction form
    12,127.47/16,733.70 = 6,821.43/x
  3. Step 3: Cross multiply
    12,127.47x = 16,733.70 × 6,821.43
  4. Step 4: Simplify right side
    12,127.47x = 114,147,763.19
  5. Step 5: Solve for x
    x = 114,147,763.19/12,127.47
  6. Step 6: Final answer
    x = 9,412.33

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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.