Home / 13,670,439.55-18,865,211.42-7,789,905.47

Finding the Fourth Proportional to 13,670,439.55, 18,865,211.42 and 7,789,905.47

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Solution

The fourth proportional to 13,670,439.55, 18,865,211.42 and 7,789,905.47 is: 10,750,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670,439.55 : 18,865,211.42 = 7,789,905.47 : x
  2. Step 2: Convert to fraction form
    13,670,439.55/18,865,211.42 = 7,789,905.47/x
  3. Step 3: Cross multiply
    13,670,439.55x = 18,865,211.42 × 7,789,905.47
  4. Step 4: Simplify right side
    13,670,439.55x = 146,958,213,500,088.88
  5. Step 5: Solve for x
    x = 146,958,213,500,088.88/13,670,439.55
  6. Step 6: Final answer
    x = 10,750,072.30

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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.