Home / 28,890,685.78-39,871,668.66-15,840,466.96

Finding the Fourth Proportional to 28,890,685.78, 39,871,668.66 and 15,840,466.96

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Solution

The fourth proportional to 28,890,685.78, 39,871,668.66 and 15,840,466.96 is: 21,861,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890,685.78 : 39,871,668.66 = 15,840,466.96 : x
  2. Step 2: Convert to fraction form
    28,890,685.78/39,871,668.66 = 15,840,466.96/x
  3. Step 3: Cross multiply
    28,890,685.78x = 39,871,668.66 × 15,840,466.96
  4. Step 4: Simplify right side
    28,890,685.78x = 631,585,850,048,797.50
  5. Step 5: Solve for x
    x = 631,585,850,048,797.50/28,890,685.78
  6. Step 6: Final answer
    x = 21,861,227.35

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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.