Home / 13,731.36-18,949.05-7,762.80

Finding the Fourth Proportional to 13,731.36, 18,949.05 and 7,762.80

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Solution

The fourth proportional to 13,731.36, 18,949.05 and 7,762.80 is: 10,712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.36 : 18,949.05 = 7,762.80 : x
  2. Step 2: Convert to fraction form
    13,731.36/18,949.05 = 7,762.80/x
  3. Step 3: Cross multiply
    13,731.36x = 18,949.05 × 7,762.80
  4. Step 4: Simplify right side
    13,731.36x = 147,097,685.34
  5. Step 5: Solve for x
    x = 147,097,685.34/13,731.36
  6. Step 6: Final answer
    x = 10,712.54

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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.