Home / 14,724.94-20,320.98-8,438.53

Finding the Fourth Proportional to 14,724.94, 20,320.98 and 8,438.53

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Solution

The fourth proportional to 14,724.94, 20,320.98 and 8,438.53 is: 11,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,724.94 : 20,320.98 = 8,438.53 : x
  2. Step 2: Convert to fraction form
    14,724.94/20,320.98 = 8,438.53/x
  3. Step 3: Cross multiply
    14,724.94x = 20,320.98 × 8,438.53
  4. Step 4: Simplify right side
    14,724.94x = 171,479,155.01
  5. Step 5: Solve for x
    x = 171,479,155.01/14,724.94
  6. Step 6: Final answer
    x = 11,645.49

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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.