Home / 39,123.92-58,683.32-11,419.60

Finding the Fourth Proportional to 39,123.92, 58,683.32 and 11,419.60

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Solution

The fourth proportional to 39,123.92, 58,683.32 and 11,419.60 is: 17,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,123.92 : 58,683.32 = 11,419.60 : x
  2. Step 2: Convert to fraction form
    39,123.92/58,683.32 = 11,419.60/x
  3. Step 3: Cross multiply
    39,123.92x = 58,683.32 × 11,419.60
  4. Step 4: Simplify right side
    39,123.92x = 670,140,041.07
  5. Step 5: Solve for x
    x = 670,140,041.07/39,123.92
  6. Step 6: Final answer
    x = 17,128.65

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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.