Home / 28,022.54-38,666.30-16,690.64

Finding the Fourth Proportional to 28,022.54, 38,666.30 and 16,690.64

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Solution

The fourth proportional to 28,022.54, 38,666.30 and 16,690.64 is: 23,030.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,022.54 : 38,666.30 = 16,690.64 : x
  2. Step 2: Convert to fraction form
    28,022.54/38,666.30 = 16,690.64/x
  3. Step 3: Cross multiply
    28,022.54x = 38,666.30 × 16,690.64
  4. Step 4: Simplify right side
    28,022.54x = 645,365,293.43
  5. Step 5: Solve for x
    x = 645,365,293.43/28,022.54
  6. Step 6: Final answer
    x = 23,030.22

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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.