Home / 19,172.35-28,752.85-8,636.28

Finding the Fourth Proportional to 19,172.35, 28,752.85 and 8,636.28

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Solution

The fourth proportional to 19,172.35, 28,752.85 and 8,636.28 is: 12,951.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.35 : 28,752.85 = 8,636.28 : x
  2. Step 2: Convert to fraction form
    19,172.35/28,752.85 = 8,636.28/x
  3. Step 3: Cross multiply
    19,172.35x = 28,752.85 × 8,636.28
  4. Step 4: Simplify right side
    19,172.35x = 248,317,663.40
  5. Step 5: Solve for x
    x = 248,317,663.40/19,172.35
  6. Step 6: Final answer
    x = 12,951.86

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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.