Home / 15,544.41-21,451.74-8,471.28

Finding the Fourth Proportional to 15,544.41, 21,451.74 and 8,471.28

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Solution

The fourth proportional to 15,544.41, 21,451.74 and 8,471.28 is: 11,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,544.41 : 21,451.74 = 8,471.28 : x
  2. Step 2: Convert to fraction form
    15,544.41/21,451.74 = 8,471.28/x
  3. Step 3: Cross multiply
    15,544.41x = 21,451.74 × 8,471.28
  4. Step 4: Simplify right side
    15,544.41x = 181,723,744.70
  5. Step 5: Solve for x
    x = 181,723,744.70/15,544.41
  6. Step 6: Final answer
    x = 11,690.62

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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.