Home / 15,307.76-21,126.92-8,503.36

Finding the Fourth Proportional to 15,307.76, 21,126.92 and 8,503.36

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Solution

The fourth proportional to 15,307.76, 21,126.92 and 8,503.36 is: 11,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.76 : 21,126.92 = 8,503.36 : x
  2. Step 2: Convert to fraction form
    15,307.76/21,126.92 = 8,503.36/x
  3. Step 3: Cross multiply
    15,307.76x = 21,126.92 × 8,503.36
  4. Step 4: Simplify right side
    15,307.76x = 179,649,711.12
  5. Step 5: Solve for x
    x = 179,649,711.12/15,307.76
  6. Step 6: Final answer
    x = 11,735.86

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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.