Home / 11,031.85-15,227.36-6,784.21

Finding the Fourth Proportional to 11,031.85, 15,227.36 and 6,784.21

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Solution

The fourth proportional to 11,031.85, 15,227.36 and 6,784.21 is: 9,364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.85 : 15,227.36 = 6,784.21 : x
  2. Step 2: Convert to fraction form
    11,031.85/15,227.36 = 6,784.21/x
  3. Step 3: Cross multiply
    11,031.85x = 15,227.36 × 6,784.21
  4. Step 4: Simplify right side
    11,031.85x = 103,305,607.99
  5. Step 5: Solve for x
    x = 103,305,607.99/11,031.85
  6. Step 6: Final answer
    x = 9,364.30

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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.