Home / 28,517.34-42,783.31-11,871.84

Finding the Fourth Proportional to 28,517.34, 42,783.31 and 11,871.84

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Solution

The fourth proportional to 28,517.34, 42,783.31 and 11,871.84 is: 17,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.34 : 42,783.31 = 11,871.84 : x
  2. Step 2: Convert to fraction form
    28,517.34/42,783.31 = 11,871.84/x
  3. Step 3: Cross multiply
    28,517.34x = 42,783.31 × 11,871.84
  4. Step 4: Simplify right side
    28,517.34x = 507,916,610.99
  5. Step 5: Solve for x
    x = 507,916,610.99/28,517.34
  6. Step 6: Final answer
    x = 17,810.80

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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.