Home / 28,370.22-39,157.79-16,431.63

Finding the Fourth Proportional to 28,370.22, 39,157.79 and 16,431.63

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Solution

The fourth proportional to 28,370.22, 39,157.79 and 16,431.63 is: 22,679.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.22 : 39,157.79 = 16,431.63 : x
  2. Step 2: Convert to fraction form
    28,370.22/39,157.79 = 16,431.63/x
  3. Step 3: Cross multiply
    28,370.22x = 39,157.79 × 16,431.63
  4. Step 4: Simplify right side
    28,370.22x = 643,426,162.19
  5. Step 5: Solve for x
    x = 643,426,162.19/28,370.22
  6. Step 6: Final answer
    x = 22,679.64

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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.