Home / 18,031.96-27,028.76-10,639.88

Finding the Fourth Proportional to 18,031.96, 27,028.76 and 10,639.88

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Solution

The fourth proportional to 18,031.96, 27,028.76 and 10,639.88 is: 15,948.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.96 : 27,028.76 = 10,639.88 : x
  2. Step 2: Convert to fraction form
    18,031.96/27,028.76 = 10,639.88/x
  3. Step 3: Cross multiply
    18,031.96x = 27,028.76 × 10,639.88
  4. Step 4: Simplify right side
    18,031.96x = 287,582,762.95
  5. Step 5: Solve for x
    x = 287,582,762.95/18,031.96
  6. Step 6: Final answer
    x = 15,948.50

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1.5x scale

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.