Home / 35,523.23-49,023.69-20,420.78

Finding the Fourth Proportional to 35,523.23, 49,023.69 and 20,420.78

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Solution

The fourth proportional to 35,523.23, 49,023.69 and 20,420.78 is: 28,181.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,523.23 : 49,023.69 = 20,420.78 : x
  2. Step 2: Convert to fraction form
    35,523.23/49,023.69 = 20,420.78/x
  3. Step 3: Cross multiply
    35,523.23x = 49,023.69 × 20,420.78
  4. Step 4: Simplify right side
    35,523.23x = 1,001,101,988.28
  5. Step 5: Solve for x
    x = 1,001,101,988.28/35,523.23
  6. Step 6: Final answer
    x = 28,181.61

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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.