Home / 28,438.14-39,236.76-18,367.02

Finding the Fourth Proportional to 28,438.14, 39,236.76 and 18,367.02

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Solution

The fourth proportional to 28,438.14, 39,236.76 and 18,367.02 is: 25,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.14 : 39,236.76 = 18,367.02 : x
  2. Step 2: Convert to fraction form
    28,438.14/39,236.76 = 18,367.02/x
  3. Step 3: Cross multiply
    28,438.14x = 39,236.76 × 18,367.02
  4. Step 4: Simplify right side
    28,438.14x = 720,662,355.66
  5. Step 5: Solve for x
    x = 720,662,355.66/28,438.14
  6. Step 6: Final answer
    x = 25,341.40

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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.