Home / 31,702.11-43,741.40-18,774.86

Finding the Fourth Proportional to 31,702.11, 43,741.40 and 18,774.86

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Solution

The fourth proportional to 31,702.11, 43,741.40 and 18,774.86 is: 25,904.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,702.11 : 43,741.40 = 18,774.86 : x
  2. Step 2: Convert to fraction form
    31,702.11/43,741.40 = 18,774.86/x
  3. Step 3: Cross multiply
    31,702.11x = 43,741.40 × 18,774.86
  4. Step 4: Simplify right side
    31,702.11x = 821,238,442.50
  5. Step 5: Solve for x
    x = 821,238,442.50/31,702.11
  6. Step 6: Final answer
    x = 25,904.85

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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.