Home / 39,485-59,256.66-18,708.50

Finding the Fourth Proportional to 39,485, 59,256.66 and 18,708.50

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Solution

The fourth proportional to 39,485, 59,256.66 and 18,708.50 is: 28,076.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,485 : 59,256.66 = 18,708.50 : x
  2. Step 2: Convert to fraction form
    39,485/59,256.66 = 18,708.50/x
  3. Step 3: Cross multiply
    39,485x = 59,256.66 × 18,708.50
  4. Step 4: Simplify right side
    39,485x = 1,108,603,223.61
  5. Step 5: Solve for x
    x = 1,108,603,223.61/39,485
  6. Step 6: Final answer
    x = 28,076.57

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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.