Home / 12,656.03-18,987.89-8,965.40

Finding the Fourth Proportional to 12,656.03, 18,987.89 and 8,965.40

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Solution

The fourth proportional to 12,656.03, 18,987.89 and 8,965.40 is: 13,450.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.03 : 18,987.89 = 8,965.40 : x
  2. Step 2: Convert to fraction form
    12,656.03/18,987.89 = 8,965.40/x
  3. Step 3: Cross multiply
    12,656.03x = 18,987.89 × 8,965.40
  4. Step 4: Simplify right side
    12,656.03x = 170,233,889.24
  5. Step 5: Solve for x
    x = 170,233,889.24/12,656.03
  6. Step 6: Final answer
    x = 13,450.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.