Home / 11,220.90-16,831.35-7,284.30

Finding the Fourth Proportional to 11,220.90, 16,831.35 and 7,284.30

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Solution

The fourth proportional to 11,220.90, 16,831.35 and 7,284.30 is: 10,926.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.90 : 16,831.35 = 7,284.30 : x
  2. Step 2: Convert to fraction form
    11,220.90/16,831.35 = 7,284.30/x
  3. Step 3: Cross multiply
    11,220.90x = 16,831.35 × 7,284.30
  4. Step 4: Simplify right side
    11,220.90x = 122,604,602.81
  5. Step 5: Solve for x
    x = 122,604,602.81/11,220.90
  6. Step 6: Final answer
    x = 10,926.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.