Home / 21,039.60-29,034.72-11,479.44

Finding the Fourth Proportional to 21,039.60, 29,034.72 and 11,479.44

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Solution

The fourth proportional to 21,039.60, 29,034.72 and 11,479.44 is: 15,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.60 : 29,034.72 = 11,479.44 : x
  2. Step 2: Convert to fraction form
    21,039.60/29,034.72 = 11,479.44/x
  3. Step 3: Cross multiply
    21,039.60x = 29,034.72 × 11,479.44
  4. Step 4: Simplify right side
    21,039.60x = 333,302,326.16
  5. Step 5: Solve for x
    x = 333,302,326.16/21,039.60
  6. Step 6: Final answer
    x = 15,841.67

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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.