Home / 28,878.75-43,317.93-11,781.57

Finding the Fourth Proportional to 28,878.75, 43,317.93 and 11,781.57

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Solution

The fourth proportional to 28,878.75, 43,317.93 and 11,781.57 is: 17,672.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.75 : 43,317.93 = 11,781.57 : x
  2. Step 2: Convert to fraction form
    28,878.75/43,317.93 = 11,781.57/x
  3. Step 3: Cross multiply
    28,878.75x = 43,317.93 × 11,781.57
  4. Step 4: Simplify right side
    28,878.75x = 510,353,224.55
  5. Step 5: Solve for x
    x = 510,353,224.55/28,878.75
  6. Step 6: Final answer
    x = 17,672.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.