Home / 15,730.08-21,689.73-12,136.92

Finding the Fourth Proportional to 15,730.08, 21,689.73 and 12,136.92

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Solution

The fourth proportional to 15,730.08, 21,689.73 and 12,136.92 is: 16,735.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.08 : 21,689.73 = 12,136.92 : x
  2. Step 2: Convert to fraction form
    15,730.08/21,689.73 = 12,136.92/x
  3. Step 3: Cross multiply
    15,730.08x = 21,689.73 × 12,136.92
  4. Step 4: Simplify right side
    15,730.08x = 263,246,517.83
  5. Step 5: Solve for x
    x = 263,246,517.83/15,730.08
  6. Step 6: Final answer
    x = 16,735.23

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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.