Home / 14,778.54-20,391.58-8,810.76

Finding the Fourth Proportional to 14,778.54, 20,391.58 and 8,810.76

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Solution

The fourth proportional to 14,778.54, 20,391.58 and 8,810.76 is: 12,157.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.54 : 20,391.58 = 8,810.76 : x
  2. Step 2: Convert to fraction form
    14,778.54/20,391.58 = 8,810.76/x
  3. Step 3: Cross multiply
    14,778.54x = 20,391.58 × 8,810.76
  4. Step 4: Simplify right side
    14,778.54x = 179,665,317.40
  5. Step 5: Solve for x
    x = 179,665,317.40/14,778.54
  6. Step 6: Final answer
    x = 12,157.18

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Double scale
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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.