Home / 13,031.79-17,991.62-8,563.32

Finding the Fourth Proportional to 13,031.79, 17,991.62 and 8,563.32

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Solution

The fourth proportional to 13,031.79, 17,991.62 and 8,563.32 is: 11,822.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,031.79 : 17,991.62 = 8,563.32 : x
  2. Step 2: Convert to fraction form
    13,031.79/17,991.62 = 8,563.32/x
  3. Step 3: Cross multiply
    13,031.79x = 17,991.62 × 8,563.32
  4. Step 4: Simplify right side
    13,031.79x = 154,067,988.67
  5. Step 5: Solve for x
    x = 154,067,988.67/13,031.79
  6. Step 6: Final answer
    x = 11,822.48

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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.