Home / 28,563.14-42,872.37-13,782.42

Finding the Fourth Proportional to 28,563.14, 42,872.37 and 13,782.42

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Solution

The fourth proportional to 28,563.14, 42,872.37 and 13,782.42 is: 20,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.14 : 42,872.37 = 13,782.42 : x
  2. Step 2: Convert to fraction form
    28,563.14/42,872.37 = 13,782.42/x
  3. Step 3: Cross multiply
    28,563.14x = 42,872.37 × 13,782.42
  4. Step 4: Simplify right side
    28,563.14x = 590,885,009.74
  5. Step 5: Solve for x
    x = 590,885,009.74/28,563.14
  6. Step 6: Final answer
    x = 20,686.98

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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.