Home / 28,186.80-42,266.57-10,405.41

Finding the Fourth Proportional to 28,186.80, 42,266.57 and 10,405.41

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Solution

The fourth proportional to 28,186.80, 42,266.57 and 10,405.41 is: 15,603.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.80 : 42,266.57 = 10,405.41 : x
  2. Step 2: Convert to fraction form
    28,186.80/42,266.57 = 10,405.41/x
  3. Step 3: Cross multiply
    28,186.80x = 42,266.57 × 10,405.41
  4. Step 4: Simplify right side
    28,186.80x = 439,800,938.12
  5. Step 5: Solve for x
    x = 439,800,938.12/28,186.80
  6. Step 6: Final answer
    x = 15,603.08

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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.