Home / 35,885.12-49,518.24-20,778.81

Finding the Fourth Proportional to 35,885.12, 49,518.24 and 20,778.81

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Solution

The fourth proportional to 35,885.12, 49,518.24 and 20,778.81 is: 28,672.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,885.12 : 49,518.24 = 20,778.81 : x
  2. Step 2: Convert to fraction form
    35,885.12/49,518.24 = 20,778.81/x
  3. Step 3: Cross multiply
    35,885.12x = 49,518.24 × 20,778.81
  4. Step 4: Simplify right side
    35,885.12x = 1,028,930,012.20
  5. Step 5: Solve for x
    x = 1,028,930,012.20/35,885.12
  6. Step 6: Final answer
    x = 28,672.89

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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.