Home / 28,262.79-42,354.03-20,808.75

Finding the Fourth Proportional to 28,262.79, 42,354.03 and 20,808.75

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Solution

The fourth proportional to 28,262.79, 42,354.03 and 20,808.75 is: 31,183.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.79 : 42,354.03 = 20,808.75 : x
  2. Step 2: Convert to fraction form
    28,262.79/42,354.03 = 20,808.75/x
  3. Step 3: Cross multiply
    28,262.79x = 42,354.03 × 20,808.75
  4. Step 4: Simplify right side
    28,262.79x = 881,334,421.76
  5. Step 5: Solve for x
    x = 881,334,421.76/28,262.79
  6. Step 6: Final answer
    x = 31,183.56

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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.