Home / 18,763.90-28,136.76-7,666.18

Finding the Fourth Proportional to 18,763.90, 28,136.76 and 7,666.18

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Solution

The fourth proportional to 18,763.90, 28,136.76 and 7,666.18 is: 11,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.90 : 28,136.76 = 7,666.18 : x
  2. Step 2: Convert to fraction form
    18,763.90/28,136.76 = 7,666.18/x
  3. Step 3: Cross multiply
    18,763.90x = 28,136.76 × 7,666.18
  4. Step 4: Simplify right side
    18,763.90x = 215,701,466.78
  5. Step 5: Solve for x
    x = 215,701,466.78/18,763.90
  6. Step 6: Final answer
    x = 11,495.56

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1.5x scale

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.