Home / 18,913.30-28,313.79-14,004.70

Finding the Fourth Proportional to 18,913.30, 28,313.79 and 14,004.70

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Solution

The fourth proportional to 18,913.30, 28,313.79 and 14,004.70 is: 20,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.30 : 28,313.79 = 14,004.70 : x
  2. Step 2: Convert to fraction form
    18,913.30/28,313.79 = 14,004.70/x
  3. Step 3: Cross multiply
    18,913.30x = 28,313.79 × 14,004.70
  4. Step 4: Simplify right side
    18,913.30x = 396,526,134.81
  5. Step 5: Solve for x
    x = 396,526,134.81/18,913.30
  6. Step 6: Final answer
    x = 20,965.47

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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.