Home / 35,819.50-49,431.90-21,664.12

Finding the Fourth Proportional to 35,819.50, 49,431.90 and 21,664.12

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Solution

The fourth proportional to 35,819.50, 49,431.90 and 21,664.12 is: 29,897.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,819.50 : 49,431.90 = 21,664.12 : x
  2. Step 2: Convert to fraction form
    35,819.50/49,431.90 = 21,664.12/x
  3. Step 3: Cross multiply
    35,819.50x = 49,431.90 × 21,664.12
  4. Step 4: Simplify right side
    35,819.50x = 1,070,898,613.43
  5. Step 5: Solve for x
    x = 1,070,898,613.43/35,819.50
  6. Step 6: Final answer
    x = 29,897.08

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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.