Home / 28,818.72-39,759.12-19,372.32

Finding the Fourth Proportional to 28,818.72, 39,759.12 and 19,372.32

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Solution

The fourth proportional to 28,818.72, 39,759.12 and 19,372.32 is: 26,726.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,818.72 : 39,759.12 = 19,372.32 : x
  2. Step 2: Convert to fraction form
    28,818.72/39,759.12 = 19,372.32/x
  3. Step 3: Cross multiply
    28,818.72x = 39,759.12 × 19,372.32
  4. Step 4: Simplify right side
    28,818.72x = 770,226,395.56
  5. Step 5: Solve for x
    x = 770,226,395.56/28,818.72
  6. Step 6: Final answer
    x = 26,726.60

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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.