Home / 13,755.78-20,628.81-4,998.06

Finding the Fourth Proportional to 13,755.78, 20,628.81 and 4,998.06

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Solution

The fourth proportional to 13,755.78, 20,628.81 and 4,998.06 is: 7,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.78 : 20,628.81 = 4,998.06 : x
  2. Step 2: Convert to fraction form
    13,755.78/20,628.81 = 4,998.06/x
  3. Step 3: Cross multiply
    13,755.78x = 20,628.81 × 4,998.06
  4. Step 4: Simplify right side
    13,755.78x = 103,104,030.11
  5. Step 5: Solve for x
    x = 103,104,030.11/13,755.78
  6. Step 6: Final answer
    x = 7,495.32

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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.