Home / 55,678.88-83,518.32-13,558.70

Finding the Fourth Proportional to 55,678.88, 83,518.32 and 13,558.70

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Solution

The fourth proportional to 55,678.88, 83,518.32 and 13,558.70 is: 20,338.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,678.88 : 83,518.32 = 13,558.70 : x
  2. Step 2: Convert to fraction form
    55,678.88/83,518.32 = 13,558.70/x
  3. Step 3: Cross multiply
    55,678.88x = 83,518.32 × 13,558.70
  4. Step 4: Simplify right side
    55,678.88x = 1,132,399,845.38
  5. Step 5: Solve for x
    x = 1,132,399,845.38/55,678.88
  6. Step 6: Final answer
    x = 20,338.05

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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.