Home / 21,757.32-30,039.30-14,309.64

Finding the Fourth Proportional to 21,757.32, 30,039.30 and 14,309.64

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Solution

The fourth proportional to 21,757.32, 30,039.30 and 14,309.64 is: 19,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.32 : 30,039.30 = 14,309.64 : x
  2. Step 2: Convert to fraction form
    21,757.32/30,039.30 = 14,309.64/x
  3. Step 3: Cross multiply
    21,757.32x = 30,039.30 × 14,309.64
  4. Step 4: Simplify right side
    21,757.32x = 429,851,568.85
  5. Step 5: Solve for x
    x = 429,851,568.85/21,757.32
  6. Step 6: Final answer
    x = 19,756.64

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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.