Home / 31,021.08-42,810.84-16,873.64

Finding the Fourth Proportional to 31,021.08, 42,810.84 and 16,873.64

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Solution

The fourth proportional to 31,021.08, 42,810.84 and 16,873.64 is: 23,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,021.08 : 42,810.84 = 16,873.64 : x
  2. Step 2: Convert to fraction form
    31,021.08/42,810.84 = 16,873.64/x
  3. Step 3: Cross multiply
    31,021.08x = 42,810.84 × 16,873.64
  4. Step 4: Simplify right side
    31,021.08x = 722,374,702.26
  5. Step 5: Solve for x
    x = 722,374,702.26/31,021.08
  6. Step 6: Final answer
    x = 23,286.57

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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.