Home / 14,764.28-20,374.00-8,390.70

Finding the Fourth Proportional to 14,764.28, 20,374.00 and 8,390.70

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Solution

The fourth proportional to 14,764.28, 20,374.00 and 8,390.70 is: 11,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,764.28 : 20,374.00 = 8,390.70 : x
  2. Step 2: Convert to fraction form
    14,764.28/20,374.00 = 8,390.70/x
  3. Step 3: Cross multiply
    14,764.28x = 20,374.00 × 8,390.70
  4. Step 4: Simplify right side
    14,764.28x = 170,952,100.82
  5. Step 5: Solve for x
    x = 170,952,100.82/14,764.28
  6. Step 6: Final answer
    x = 11,578.77

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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.