Home / 12,621.65-17,435.55-11,957.36

Finding the Fourth Proportional to 12,621.65, 17,435.55 and 11,957.36

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Solution

The fourth proportional to 12,621.65, 17,435.55 and 11,957.36 is: 16,517.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.65 : 17,435.55 = 11,957.36 : x
  2. Step 2: Convert to fraction form
    12,621.65/17,435.55 = 11,957.36/x
  3. Step 3: Cross multiply
    12,621.65x = 17,435.55 × 11,957.36
  4. Step 4: Simplify right side
    12,621.65x = 208,483,060.97
  5. Step 5: Solve for x
    x = 208,483,060.97/12,621.65
  6. Step 6: Final answer
    x = 16,517.90

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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.