Home / 11,031.84-16,515.36-7,125.12

Finding the Fourth Proportional to 11,031.84, 16,515.36 and 7,125.12

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Solution

The fourth proportional to 11,031.84, 16,515.36 and 7,125.12 is: 10,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.84 : 16,515.36 = 7,125.12 : x
  2. Step 2: Convert to fraction form
    11,031.84/16,515.36 = 7,125.12/x
  3. Step 3: Cross multiply
    11,031.84x = 16,515.36 × 7,125.12
  4. Step 4: Simplify right side
    11,031.84x = 117,673,921.84
  5. Step 5: Solve for x
    x = 117,673,921.84/11,031.84
  6. Step 6: Final answer
    x = 10,666.75

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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.