Home / 20,795.49-28,687.11-14,078.76

Finding the Fourth Proportional to 20,795.49, 28,687.11 and 14,078.76

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Solution

The fourth proportional to 20,795.49, 28,687.11 and 14,078.76 is: 19,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.49 : 28,687.11 = 14,078.76 : x
  2. Step 2: Convert to fraction form
    20,795.49/28,687.11 = 14,078.76/x
  3. Step 3: Cross multiply
    20,795.49x = 28,687.11 × 14,078.76
  4. Step 4: Simplify right side
    20,795.49x = 403,878,936.78
  5. Step 5: Solve for x
    x = 403,878,936.78/20,795.49
  6. Step 6: Final answer
    x = 19,421.47

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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.