Home / 19,142.76-28,719.98-9,789.35

Finding the Fourth Proportional to 19,142.76, 28,719.98 and 9,789.35

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Solution

The fourth proportional to 19,142.76, 28,719.98 and 9,789.35 is: 14,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.76 : 28,719.98 = 9,789.35 : x
  2. Step 2: Convert to fraction form
    19,142.76/28,719.98 = 9,789.35/x
  3. Step 3: Cross multiply
    19,142.76x = 28,719.98 × 9,789.35
  4. Step 4: Simplify right side
    19,142.76x = 281,149,936.21
  5. Step 5: Solve for x
    x = 281,149,936.21/19,142.76
  6. Step 6: Final answer
    x = 14,687.01

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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.