Home / 46,419.20-69,640.53-13,139.56

Finding the Fourth Proportional to 46,419.20, 69,640.53 and 13,139.56

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Solution

The fourth proportional to 46,419.20, 69,640.53 and 13,139.56 is: 19,712.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,419.20 : 69,640.53 = 13,139.56 : x
  2. Step 2: Convert to fraction form
    46,419.20/69,640.53 = 13,139.56/x
  3. Step 3: Cross multiply
    46,419.20x = 69,640.53 × 13,139.56
  4. Step 4: Simplify right side
    46,419.20x = 915,045,629.16
  5. Step 5: Solve for x
    x = 915,045,629.16/46,419.20
  6. Step 6: Final answer
    x = 19,712.65

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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.