Home / 12,636,007.40-18,954,011.10-8,380,980.20

Finding the Fourth Proportional to 12,636,007.40, 18,954,011.10 and 8,380,980.20

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Solution

The fourth proportional to 12,636,007.40, 18,954,011.10 and 8,380,980.20 is: 12,571,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636,007.40 : 18,954,011.10 = 8,380,980.20 : x
  2. Step 2: Convert to fraction form
    12,636,007.40/18,954,011.10 = 8,380,980.20/x
  3. Step 3: Cross multiply
    12,636,007.40x = 18,954,011.10 × 8,380,980.20
  4. Step 4: Simplify right side
    12,636,007.40x = 158,853,191,739,680.25
  5. Step 5: Solve for x
    x = 158,853,191,739,680.25/12,636,007.40
  6. Step 6: Final answer
    x = 12,571,470.30

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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.