Home / 28,075.14-42,125.13-21,825.86

Finding the Fourth Proportional to 28,075.14, 42,125.13 and 21,825.86

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Solution

The fourth proportional to 28,075.14, 42,125.13 and 21,825.86 is: 32,748.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.14 : 42,125.13 = 21,825.86 : x
  2. Step 2: Convert to fraction form
    28,075.14/42,125.13 = 21,825.86/x
  3. Step 3: Cross multiply
    28,075.14x = 42,125.13 × 21,825.86
  4. Step 4: Simplify right side
    28,075.14x = 919,416,979.24
  5. Step 5: Solve for x
    x = 919,416,979.24/28,075.14
  6. Step 6: Final answer
    x = 32,748.44

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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.