Home / 14,679.60-20,259.26-8,390.76

Finding the Fourth Proportional to 14,679.60, 20,259.26 and 8,390.76

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Solution

The fourth proportional to 14,679.60, 20,259.26 and 8,390.76 is: 11,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.60 : 20,259.26 = 8,390.76 : x
  2. Step 2: Convert to fraction form
    14,679.60/20,259.26 = 8,390.76/x
  3. Step 3: Cross multiply
    14,679.60x = 20,259.26 × 8,390.76
  4. Step 4: Simplify right side
    14,679.60x = 169,990,588.44
  5. Step 5: Solve for x
    x = 169,990,588.44/14,679.60
  6. Step 6: Final answer
    x = 11,580.06

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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.