Home / 28,271.15-39,012.67-15,695.09

Finding the Fourth Proportional to 28,271.15, 39,012.67 and 15,695.09

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Solution

The fourth proportional to 28,271.15, 39,012.67 and 15,695.09 is: 21,658.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.15 : 39,012.67 = 15,695.09 : x
  2. Step 2: Convert to fraction form
    28,271.15/39,012.67 = 15,695.09/x
  3. Step 3: Cross multiply
    28,271.15x = 39,012.67 × 15,695.09
  4. Step 4: Simplify right side
    28,271.15x = 612,307,503.28
  5. Step 5: Solve for x
    x = 612,307,503.28/28,271.15
  6. Step 6: Final answer
    x = 21,658.38

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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.