Home / 39,112.08-58,662.80-12,813.68

Finding the Fourth Proportional to 39,112.08, 58,662.80 and 12,813.68

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Solution

The fourth proportional to 39,112.08, 58,662.80 and 12,813.68 is: 19,218.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,112.08 : 58,662.80 = 12,813.68 : x
  2. Step 2: Convert to fraction form
    39,112.08/58,662.80 = 12,813.68/x
  3. Step 3: Cross multiply
    39,112.08x = 58,662.80 × 12,813.68
  4. Step 4: Simplify right side
    39,112.08x = 751,686,347.10
  5. Step 5: Solve for x
    x = 751,686,347.10/39,112.08
  6. Step 6: Final answer
    x = 19,218.78

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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.