Home / 13,031.68-19,522.32-8,103.28

Finding the Fourth Proportional to 13,031.68, 19,522.32 and 8,103.28

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Solution

The fourth proportional to 13,031.68, 19,522.32 and 8,103.28 is: 12,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,031.68 : 19,522.32 = 8,103.28 : x
  2. Step 2: Convert to fraction form
    13,031.68/19,522.32 = 8,103.28/x
  3. Step 3: Cross multiply
    13,031.68x = 19,522.32 × 8,103.28
  4. Step 4: Simplify right side
    13,031.68x = 158,194,825.21
  5. Step 5: Solve for x
    x = 158,194,825.21/13,031.68
  6. Step 6: Final answer
    x = 12,139.25

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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.