Home / 21,627.04-29,840.79-13,133.65

Finding the Fourth Proportional to 21,627.04, 29,840.79 and 13,133.65

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Solution

The fourth proportional to 21,627.04, 29,840.79 and 13,133.65 is: 18,121.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.04 : 29,840.79 = 13,133.65 : x
  2. Step 2: Convert to fraction form
    21,627.04/29,840.79 = 13,133.65/x
  3. Step 3: Cross multiply
    21,627.04x = 29,840.79 × 13,133.65
  4. Step 4: Simplify right side
    21,627.04x = 391,918,491.58
  5. Step 5: Solve for x
    x = 391,918,491.58/21,627.04
  6. Step 6: Final answer
    x = 18,121.69

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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.