Home / 21,265.28-29,345.64-12,314.40

Finding the Fourth Proportional to 21,265.28, 29,345.64 and 12,314.40

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Solution

The fourth proportional to 21,265.28, 29,345.64 and 12,314.40 is: 16,993.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.28 : 29,345.64 = 12,314.40 : x
  2. Step 2: Convert to fraction form
    21,265.28/29,345.64 = 12,314.40/x
  3. Step 3: Cross multiply
    21,265.28x = 29,345.64 × 12,314.40
  4. Step 4: Simplify right side
    21,265.28x = 361,373,949.22
  5. Step 5: Solve for x
    x = 361,373,949.22/21,265.28
  6. Step 6: Final answer
    x = 16,993.61

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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.