Home / 28,570.37-42,871.75-15,422.45

Finding the Fourth Proportional to 28,570.37, 42,871.75 and 15,422.45

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Solution

The fourth proportional to 28,570.37, 42,871.75 and 15,422.45 is: 23,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.37 : 42,871.75 = 15,422.45 : x
  2. Step 2: Convert to fraction form
    28,570.37/42,871.75 = 15,422.45/x
  3. Step 3: Cross multiply
    28,570.37x = 42,871.75 × 15,422.45
  4. Step 4: Simplify right side
    28,570.37x = 661,187,167.87
  5. Step 5: Solve for x
    x = 661,187,167.87/28,570.37
  6. Step 6: Final answer
    x = 23,142.41

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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.