Home / 13,603.89-18,772.34-7,634.41

Finding the Fourth Proportional to 13,603.89, 18,772.34 and 7,634.41

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Solution

The fourth proportional to 13,603.89, 18,772.34 and 7,634.41 is: 10,534.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.89 : 18,772.34 = 7,634.41 : x
  2. Step 2: Convert to fraction form
    13,603.89/18,772.34 = 7,634.41/x
  3. Step 3: Cross multiply
    13,603.89x = 18,772.34 × 7,634.41
  4. Step 4: Simplify right side
    13,603.89x = 143,315,731.39
  5. Step 5: Solve for x
    x = 143,315,731.39/13,603.89
  6. Step 6: Final answer
    x = 10,534.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.