Home / 11,688.75-16,128.34-6,652.67

Finding the Fourth Proportional to 11,688.75, 16,128.34 and 6,652.67

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Solution

The fourth proportional to 11,688.75, 16,128.34 and 6,652.67 is: 9,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.75 : 16,128.34 = 6,652.67 : x
  2. Step 2: Convert to fraction form
    11,688.75/16,128.34 = 6,652.67/x
  3. Step 3: Cross multiply
    11,688.75x = 16,128.34 × 6,652.67
  4. Step 4: Simplify right side
    11,688.75x = 107,296,547.36
  5. Step 5: Solve for x
    x = 107,296,547.36/11,688.75
  6. Step 6: Final answer
    x = 9,179.47

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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.