Home / 14,578.48-20,118.32-8,291.28

Finding the Fourth Proportional to 14,578.48, 20,118.32 and 8,291.28

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Solution

The fourth proportional to 14,578.48, 20,118.32 and 8,291.28 is: 11,441.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,578.48 : 20,118.32 = 8,291.28 : x
  2. Step 2: Convert to fraction form
    14,578.48/20,118.32 = 8,291.28/x
  3. Step 3: Cross multiply
    14,578.48x = 20,118.32 × 8,291.28
  4. Step 4: Simplify right side
    14,578.48x = 166,806,624.25
  5. Step 5: Solve for x
    x = 166,806,624.25/14,578.48
  6. Step 6: Final answer
    x = 11,441.98

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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.