Home / 15,746.50-21,729.84-8,672.98

Finding the Fourth Proportional to 15,746.50, 21,729.84 and 8,672.98

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Solution

The fourth proportional to 15,746.50, 21,729.84 and 8,672.98 is: 11,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.50 : 21,729.84 = 8,672.98 : x
  2. Step 2: Convert to fraction form
    15,746.50/21,729.84 = 8,672.98/x
  3. Step 3: Cross multiply
    15,746.50x = 21,729.84 × 8,672.98
  4. Step 4: Simplify right side
    15,746.50x = 188,462,467.72
  5. Step 5: Solve for x
    x = 188,462,467.72/15,746.50
  6. Step 6: Final answer
    x = 11,968.53

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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.