Home / 13,619.48-20,415-9,237.20

Finding the Fourth Proportional to 13,619.48, 20,415 and 9,237.20

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Solution

The fourth proportional to 13,619.48, 20,415 and 9,237.20 is: 13,846.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.48 : 20,415 = 9,237.20 : x
  2. Step 2: Convert to fraction form
    13,619.48/20,415 = 9,237.20/x
  3. Step 3: Cross multiply
    13,619.48x = 20,415 × 9,237.20
  4. Step 4: Simplify right side
    13,619.48x = 188,577,438
  5. Step 5: Solve for x
    x = 188,577,438/13,619.48
  6. Step 6: Final answer
    x = 13,846.16

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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.