Home / 28,517.15-42,783.02-11,871.65

Finding the Fourth Proportional to 28,517.15, 42,783.02 and 11,871.65

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Solution

The fourth proportional to 28,517.15, 42,783.02 and 11,871.65 is: 17,810.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.15 : 42,783.02 = 11,871.65 : x
  2. Step 2: Convert to fraction form
    28,517.15/42,783.02 = 11,871.65/x
  3. Step 3: Cross multiply
    28,517.15x = 42,783.02 × 11,871.65
  4. Step 4: Simplify right side
    28,517.15x = 507,905,131.50
  5. Step 5: Solve for x
    x = 507,905,131.50/28,517.15
  6. Step 6: Final answer
    x = 17,810.51

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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.