Home / 13,730.85-18,949.76-7,763.58

Finding the Fourth Proportional to 13,730.85, 18,949.76 and 7,763.58

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Solution

The fourth proportional to 13,730.85, 18,949.76 and 7,763.58 is: 10,714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.85 : 18,949.76 = 7,763.58 : x
  2. Step 2: Convert to fraction form
    13,730.85/18,949.76 = 7,763.58/x
  3. Step 3: Cross multiply
    13,730.85x = 18,949.76 × 7,763.58
  4. Step 4: Simplify right side
    13,730.85x = 147,117,938.92
  5. Step 5: Solve for x
    x = 147,117,938.92/13,730.85
  6. Step 6: Final answer
    x = 10,714.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.