Home / 21,468.24-29,629.80-12,518.28

Finding the Fourth Proportional to 21,468.24, 29,629.80 and 12,518.28

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Solution

The fourth proportional to 21,468.24, 29,629.80 and 12,518.28 is: 17,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.24 : 29,629.80 = 12,518.28 : x
  2. Step 2: Convert to fraction form
    21,468.24/29,629.80 = 12,518.28/x
  3. Step 3: Cross multiply
    21,468.24x = 29,629.80 × 12,518.28
  4. Step 4: Simplify right side
    21,468.24x = 370,914,132.74
  5. Step 5: Solve for x
    x = 370,914,132.74/21,468.24
  6. Step 6: Final answer
    x = 17,277.34

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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.