Home / 19,703.76-27,184.32-12,987.36

Finding the Fourth Proportional to 19,703.76, 27,184.32 and 12,987.36

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Solution

The fourth proportional to 19,703.76, 27,184.32 and 12,987.36 is: 17,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,703.76 : 27,184.32 = 12,987.36 : x
  2. Step 2: Convert to fraction form
    19,703.76/27,184.32 = 12,987.36/x
  3. Step 3: Cross multiply
    19,703.76x = 27,184.32 × 12,987.36
  4. Step 4: Simplify right side
    19,703.76x = 353,052,550.20
  5. Step 5: Solve for x
    x = 353,052,550.20/19,703.76
  6. Step 6: Final answer
    x = 17,918.03

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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.