Home / 28,052.84-42,079.26-12,481.40

Finding the Fourth Proportional to 28,052.84, 42,079.26 and 12,481.40

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Solution

The fourth proportional to 28,052.84, 42,079.26 and 12,481.40 is: 18,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,052.84 : 42,079.26 = 12,481.40 : x
  2. Step 2: Convert to fraction form
    28,052.84/42,079.26 = 12,481.40/x
  3. Step 3: Cross multiply
    28,052.84x = 42,079.26 × 12,481.40
  4. Step 4: Simplify right side
    28,052.84x = 525,208,075.76
  5. Step 5: Solve for x
    x = 525,208,075.76/28,052.84
  6. Step 6: Final answer
    x = 18,722.10

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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.