Home / 28,940.03-43,427.30-12,928.31

Finding the Fourth Proportional to 28,940.03, 43,427.30 and 12,928.31

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Solution

The fourth proportional to 28,940.03, 43,427.30 and 12,928.31 is: 19,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,940.03 : 43,427.30 = 12,928.31 : x
  2. Step 2: Convert to fraction form
    28,940.03/43,427.30 = 12,928.31/x
  3. Step 3: Cross multiply
    28,940.03x = 43,427.30 × 12,928.31
  4. Step 4: Simplify right side
    28,940.03x = 561,441,315.08
  5. Step 5: Solve for x
    x = 561,441,315.08/28,940.03
  6. Step 6: Final answer
    x = 19,400.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.