Home / 14,145.19-19,520.67-7,771.86

Finding the Fourth Proportional to 14,145.19, 19,520.67 and 7,771.86

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Solution

The fourth proportional to 14,145.19, 19,520.67 and 7,771.86 is: 10,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.19 : 19,520.67 = 7,771.86 : x
  2. Step 2: Convert to fraction form
    14,145.19/19,520.67 = 7,771.86/x
  3. Step 3: Cross multiply
    14,145.19x = 19,520.67 × 7,771.86
  4. Step 4: Simplify right side
    14,145.19x = 151,711,875.49
  5. Step 5: Solve for x
    x = 151,711,875.49/14,145.19
  6. Step 6: Final answer
    x = 10,725.33

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Half scale
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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.