Home / 28,156.80-42,222.22-10,615.44

Finding the Fourth Proportional to 28,156.80, 42,222.22 and 10,615.44

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Solution

The fourth proportional to 28,156.80, 42,222.22 and 10,615.44 is: 15,918.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.80 : 42,222.22 = 10,615.44 : x
  2. Step 2: Convert to fraction form
    28,156.80/42,222.22 = 10,615.44/x
  3. Step 3: Cross multiply
    28,156.80x = 42,222.22 × 10,615.44
  4. Step 4: Simplify right side
    28,156.80x = 448,207,443.08
  5. Step 5: Solve for x
    x = 448,207,443.08/28,156.80
  6. Step 6: Final answer
    x = 15,918.27

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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.