Home / 14,879.09-20,507.58-14,178.40

Finding the Fourth Proportional to 14,879.09, 20,507.58 and 14,178.40

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Solution

The fourth proportional to 14,879.09, 20,507.58 and 14,178.40 is: 19,541.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,879.09 : 20,507.58 = 14,178.40 : x
  2. Step 2: Convert to fraction form
    14,879.09/20,507.58 = 14,178.40/x
  3. Step 3: Cross multiply
    14,879.09x = 20,507.58 × 14,178.40
  4. Step 4: Simplify right side
    14,879.09x = 290,764,672.27
  5. Step 5: Solve for x
    x = 290,764,672.27/14,879.09
  6. Step 6: Final answer
    x = 19,541.83

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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.