Home / 11,220.36-15,479.04-7,630.92

Finding the Fourth Proportional to 11,220.36, 15,479.04 and 7,630.92

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Solution

The fourth proportional to 11,220.36, 15,479.04 and 7,630.92 is: 10,527.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.36 : 15,479.04 = 7,630.92 : x
  2. Step 2: Convert to fraction form
    11,220.36/15,479.04 = 7,630.92/x
  3. Step 3: Cross multiply
    11,220.36x = 15,479.04 × 7,630.92
  4. Step 4: Simplify right side
    11,220.36x = 118,119,315.92
  5. Step 5: Solve for x
    x = 118,119,315.92/11,220.36
  6. Step 6: Final answer
    x = 10,527.23

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Half scale
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Double scale
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Similar ratio
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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.