Home / 12,126,742.40-18,190,405.20-3,607,356.80

Finding the Fourth Proportional to 12,126,742.40, 18,190,405.20 and 3,607,356.80

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Solution

The fourth proportional to 12,126,742.40, 18,190,405.20 and 3,607,356.80 is: 5,411,121.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,742.40 : 18,190,405.20 = 3,607,356.80 : x
  2. Step 2: Convert to fraction form
    12,126,742.40/18,190,405.20 = 3,607,356.80/x
  3. Step 3: Cross multiply
    12,126,742.40x = 18,190,405.20 × 3,607,356.80
  4. Step 4: Simplify right side
    12,126,742.40x = 65,619,281,892,975.35
  5. Step 5: Solve for x
    x = 65,619,281,892,975.35/12,126,742.40
  6. Step 6: Final answer
    x = 5,411,121.94

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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.