Home / 28,986.56-39,962.40-18,895.04

Finding the Fourth Proportional to 28,986.56, 39,962.40 and 18,895.04

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Solution

The fourth proportional to 28,986.56, 39,962.40 and 18,895.04 is: 26,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.56 : 39,962.40 = 18,895.04 : x
  2. Step 2: Convert to fraction form
    28,986.56/39,962.40 = 18,895.04/x
  3. Step 3: Cross multiply
    28,986.56x = 39,962.40 × 18,895.04
  4. Step 4: Simplify right side
    28,986.56x = 755,091,146.50
  5. Step 5: Solve for x
    x = 755,091,146.50/28,986.56
  6. Step 6: Final answer
    x = 26,049.70

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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.