Home / 15,746.57-21,730.26-8,672.99

Finding the Fourth Proportional to 15,746.57, 21,730.26 and 8,672.99

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Solution

The fourth proportional to 15,746.57, 21,730.26 and 8,672.99 is: 11,968.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.57 : 21,730.26 = 8,672.99 : x
  2. Step 2: Convert to fraction form
    15,746.57/21,730.26 = 8,672.99/x
  3. Step 3: Cross multiply
    15,746.57x = 21,730.26 × 8,672.99
  4. Step 4: Simplify right side
    15,746.57x = 188,466,175.66
  5. Step 5: Solve for x
    x = 188,466,175.66/15,746.57
  6. Step 6: Final answer
    x = 11,968.72

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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.