Home / 11,220.24-15,483.60-6,440.88

Finding the Fourth Proportional to 11,220.24, 15,483.60 and 6,440.88

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Solution

The fourth proportional to 11,220.24, 15,483.60 and 6,440.88 is: 8,888.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.24 : 15,483.60 = 6,440.88 : x
  2. Step 2: Convert to fraction form
    11,220.24/15,483.60 = 6,440.88/x
  3. Step 3: Cross multiply
    11,220.24x = 15,483.60 × 6,440.88
  4. Step 4: Simplify right side
    11,220.24x = 99,728,009.57
  5. Step 5: Solve for x
    x = 99,728,009.57/11,220.24
  6. Step 6: Final answer
    x = 8,888.22

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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.