Home / 18,728.70-28,075.77-8,872.62

Finding the Fourth Proportional to 18,728.70, 28,075.77 and 8,872.62

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Solution

The fourth proportional to 18,728.70, 28,075.77 and 8,872.62 is: 13,300.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.70 : 28,075.77 = 8,872.62 : x
  2. Step 2: Convert to fraction form
    18,728.70/28,075.77 = 8,872.62/x
  3. Step 3: Cross multiply
    18,728.70x = 28,075.77 × 8,872.62
  4. Step 4: Simplify right side
    18,728.70x = 249,105,638.42
  5. Step 5: Solve for x
    x = 249,105,638.42/18,728.70
  6. Step 6: Final answer
    x = 13,300.74

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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.