Home / 15,368.08-21,179.88-11,169.04

Finding the Fourth Proportional to 15,368.08, 21,179.88 and 11,169.04

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Solution

The fourth proportional to 15,368.08, 21,179.88 and 11,169.04 is: 15,392.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.08 : 21,179.88 = 11,169.04 : x
  2. Step 2: Convert to fraction form
    15,368.08/21,179.88 = 11,169.04/x
  3. Step 3: Cross multiply
    15,368.08x = 21,179.88 × 11,169.04
  4. Step 4: Simplify right side
    15,368.08x = 236,558,926.92
  5. Step 5: Solve for x
    x = 236,558,926.92/15,368.08
  6. Step 6: Final answer
    x = 15,392.87

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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.