Home / 28,984.80-43,477.20-21,986.40

Finding the Fourth Proportional to 28,984.80, 43,477.20 and 21,986.40

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Solution

The fourth proportional to 28,984.80, 43,477.20 and 21,986.40 is: 32,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,984.80 : 43,477.20 = 21,986.40 : x
  2. Step 2: Convert to fraction form
    28,984.80/43,477.20 = 21,986.40/x
  3. Step 3: Cross multiply
    28,984.80x = 43,477.20 × 21,986.40
  4. Step 4: Simplify right side
    28,984.80x = 955,907,110.08
  5. Step 5: Solve for x
    x = 955,907,110.08/28,984.80
  6. Step 6: Final answer
    x = 32,979.60

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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.