Home / 15,698.88-21,651.84-13,806.40

Finding the Fourth Proportional to 15,698.88, 21,651.84 and 13,806.40

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Solution

The fourth proportional to 15,698.88, 21,651.84 and 13,806.40 is: 19,041.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,698.88 : 21,651.84 = 13,806.40 : x
  2. Step 2: Convert to fraction form
    15,698.88/21,651.84 = 13,806.40/x
  3. Step 3: Cross multiply
    15,698.88x = 21,651.84 × 13,806.40
  4. Step 4: Simplify right side
    15,698.88x = 298,933,963.78
  5. Step 5: Solve for x
    x = 298,933,963.78/15,698.88
  6. Step 6: Final answer
    x = 19,041.74

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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.