Home / 28,266.39-38,991.60-18,038.79

Finding the Fourth Proportional to 28,266.39, 38,991.60 and 18,038.79

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Solution

The fourth proportional to 28,266.39, 38,991.60 and 18,038.79 is: 24,883.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.39 : 38,991.60 = 18,038.79 : x
  2. Step 2: Convert to fraction form
    28,266.39/38,991.60 = 18,038.79/x
  3. Step 3: Cross multiply
    28,266.39x = 38,991.60 × 18,038.79
  4. Step 4: Simplify right side
    28,266.39x = 703,361,284.16
  5. Step 5: Solve for x
    x = 703,361,284.16/28,266.39
  6. Step 6: Final answer
    x = 24,883.31

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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.