Home / 20,698.88-28,567.69-12,320.24

Finding the Fourth Proportional to 20,698.88, 28,567.69 and 12,320.24

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Solution

The fourth proportional to 20,698.88, 28,567.69 and 12,320.24 is: 17,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.88 : 28,567.69 = 12,320.24 : x
  2. Step 2: Convert to fraction form
    20,698.88/28,567.69 = 12,320.24/x
  3. Step 3: Cross multiply
    20,698.88x = 28,567.69 × 12,320.24
  4. Step 4: Simplify right side
    20,698.88x = 351,960,623.41
  5. Step 5: Solve for x
    x = 351,960,623.41/20,698.88
  6. Step 6: Final answer
    x = 17,003.85

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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.