Home / 15,302.20-21,116.80-8,496.60

Finding the Fourth Proportional to 15,302.20, 21,116.80 and 8,496.60

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Solution

The fourth proportional to 15,302.20, 21,116.80 and 8,496.60 is: 11,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.20 : 21,116.80 = 8,496.60 : x
  2. Step 2: Convert to fraction form
    15,302.20/21,116.80 = 8,496.60/x
  3. Step 3: Cross multiply
    15,302.20x = 21,116.80 × 8,496.60
  4. Step 4: Simplify right side
    15,302.20x = 179,421,002.88
  5. Step 5: Solve for x
    x = 179,421,002.88/15,302.20
  6. Step 6: Final answer
    x = 11,725.18

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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.