Home / 19,698.75-27,176.18-12,987.50

Finding the Fourth Proportional to 19,698.75, 27,176.18 and 12,987.50

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Solution

The fourth proportional to 19,698.75, 27,176.18 and 12,987.50 is: 17,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,698.75 : 27,176.18 = 12,987.50 : x
  2. Step 2: Convert to fraction form
    19,698.75/27,176.18 = 12,987.50/x
  3. Step 3: Cross multiply
    19,698.75x = 27,176.18 × 12,987.50
  4. Step 4: Simplify right side
    19,698.75x = 352,950,436.93
  5. Step 5: Solve for x
    x = 352,950,436.93/19,698.75
  6. Step 6: Final answer
    x = 17,917.40

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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.