Home / 28,528.34-42,798.98-15,380.42

Finding the Fourth Proportional to 28,528.34, 42,798.98 and 15,380.42

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Solution

The fourth proportional to 28,528.34, 42,798.98 and 15,380.42 is: 23,074.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,528.34 : 42,798.98 = 15,380.42 : x
  2. Step 2: Convert to fraction form
    28,528.34/42,798.98 = 15,380.42/x
  3. Step 3: Cross multiply
    28,528.34x = 42,798.98 × 15,380.42
  4. Step 4: Simplify right side
    28,528.34x = 658,266,112.43
  5. Step 5: Solve for x
    x = 658,266,112.43/28,528.34
  6. Step 6: Final answer
    x = 23,074.12

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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.