Home / 21,797.60-30,078.96-12,364.16

Finding the Fourth Proportional to 21,797.60, 30,078.96 and 12,364.16

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Solution

The fourth proportional to 21,797.60, 30,078.96 and 12,364.16 is: 17,061.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.60 : 30,078.96 = 12,364.16 : x
  2. Step 2: Convert to fraction form
    21,797.60/30,078.96 = 12,364.16/x
  3. Step 3: Cross multiply
    21,797.60x = 30,078.96 × 12,364.16
  4. Step 4: Simplify right side
    21,797.60x = 371,901,074.07
  5. Step 5: Solve for x
    x = 371,901,074.07/21,797.60
  6. Step 6: Final answer
    x = 17,061.56

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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.