Home / 28,370.09-39,157.62-16,431.50

Finding the Fourth Proportional to 28,370.09, 39,157.62 and 16,431.50

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Solution

The fourth proportional to 28,370.09, 39,157.62 and 16,431.50 is: 22,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.09 : 39,157.62 = 16,431.50 : x
  2. Step 2: Convert to fraction form
    28,370.09/39,157.62 = 16,431.50/x
  3. Step 3: Cross multiply
    28,370.09x = 39,157.62 × 16,431.50
  4. Step 4: Simplify right side
    28,370.09x = 643,418,433.03
  5. Step 5: Solve for x
    x = 643,418,433.03/28,370.09
  6. Step 6: Final answer
    x = 22,679.46

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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.