Home / 21,468.60-29,629.98-12,519

Finding the Fourth Proportional to 21,468.60, 29,629.98 and 12,519

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Solution

The fourth proportional to 21,468.60, 29,629.98 and 12,519 is: 17,278.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.60 : 29,629.98 = 12,519 : x
  2. Step 2: Convert to fraction form
    21,468.60/29,629.98 = 12,519/x
  3. Step 3: Cross multiply
    21,468.60x = 29,629.98 × 12,519
  4. Step 4: Simplify right side
    21,468.60x = 370,937,719.62
  5. Step 5: Solve for x
    x = 370,937,719.62/21,468.60
  6. Step 6: Final answer
    x = 17,278.15

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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.