Home / 12,128.19-16,736.74-6,823.01

Finding the Fourth Proportional to 12,128.19, 16,736.74 and 6,823.01

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Solution

The fourth proportional to 12,128.19, 16,736.74 and 6,823.01 is: 9,415.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.19 : 16,736.74 = 6,823.01 : x
  2. Step 2: Convert to fraction form
    12,128.19/16,736.74 = 6,823.01/x
  3. Step 3: Cross multiply
    12,128.19x = 16,736.74 × 6,823.01
  4. Step 4: Simplify right side
    12,128.19x = 114,194,969.17
  5. Step 5: Solve for x
    x = 114,194,969.17/12,128.19
  6. Step 6: Final answer
    x = 9,415.66

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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.