Home / 13,746.78-20,621.10-4,981.80

Finding the Fourth Proportional to 13,746.78, 20,621.10 and 4,981.80

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Solution

The fourth proportional to 13,746.78, 20,621.10 and 4,981.80 is: 7,473.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.78 : 20,621.10 = 4,981.80 : x
  2. Step 2: Convert to fraction form
    13,746.78/20,621.10 = 4,981.80/x
  3. Step 3: Cross multiply
    13,746.78x = 20,621.10 × 4,981.80
  4. Step 4: Simplify right side
    13,746.78x = 102,730,195.98
  5. Step 5: Solve for x
    x = 102,730,195.98/13,746.78
  6. Step 6: Final answer
    x = 7,473.04

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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.