Home / 19,501.78-29,256.32-7,815.91

Finding the Fourth Proportional to 19,501.78, 29,256.32 and 7,815.91

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Solution

The fourth proportional to 19,501.78, 29,256.32 and 7,815.91 is: 11,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,501.78 : 29,256.32 = 7,815.91 : x
  2. Step 2: Convert to fraction form
    19,501.78/29,256.32 = 7,815.91/x
  3. Step 3: Cross multiply
    19,501.78x = 29,256.32 × 7,815.91
  4. Step 4: Simplify right side
    19,501.78x = 228,664,764.05
  5. Step 5: Solve for x
    x = 228,664,764.05/19,501.78
  6. Step 6: Final answer
    x = 11,725.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.