Home / 21,031.36-31,546.88-6,240.32

Finding the Fourth Proportional to 21,031.36, 31,546.88 and 6,240.32

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Solution

The fourth proportional to 21,031.36, 31,546.88 and 6,240.32 is: 9,360.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.36 : 31,546.88 = 6,240.32 : x
  2. Step 2: Convert to fraction form
    21,031.36/31,546.88 = 6,240.32/x
  3. Step 3: Cross multiply
    21,031.36x = 31,546.88 × 6,240.32
  4. Step 4: Simplify right side
    21,031.36x = 196,862,626.20
  5. Step 5: Solve for x
    x = 196,862,626.20/21,031.36
  6. Step 6: Final answer
    x = 9,360.43

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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.