Home / 28,117.98-42,163.06-9,391.58

Finding the Fourth Proportional to 28,117.98, 42,163.06 and 9,391.58

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Solution

The fourth proportional to 28,117.98, 42,163.06 and 9,391.58 is: 14,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.98 : 42,163.06 = 9,391.58 : x
  2. Step 2: Convert to fraction form
    28,117.98/42,163.06 = 9,391.58/x
  3. Step 3: Cross multiply
    28,117.98x = 42,163.06 × 9,391.58
  4. Step 4: Simplify right side
    28,117.98x = 395,977,751.03
  5. Step 5: Solve for x
    x = 395,977,751.03/28,117.98
  6. Step 6: Final answer
    x = 14,082.72

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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.