Home / 12,606.08-18,828.16-9,132.80

Finding the Fourth Proportional to 12,606.08, 18,828.16 and 9,132.80

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Solution

The fourth proportional to 12,606.08, 18,828.16 and 9,132.80 is: 13,640.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.08 : 18,828.16 = 9,132.80 : x
  2. Step 2: Convert to fraction form
    12,606.08/18,828.16 = 9,132.80/x
  3. Step 3: Cross multiply
    12,606.08x = 18,828.16 × 9,132.80
  4. Step 4: Simplify right side
    12,606.08x = 171,953,819.65
  5. Step 5: Solve for x
    x = 171,953,819.65/12,606.08
  6. Step 6: Final answer
    x = 13,640.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.