Home / 28,811,741.40-39,759,913.78-15,759,255.20

Finding the Fourth Proportional to 28,811,741.40, 39,759,913.78 and 15,759,255.20

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Solution

The fourth proportional to 28,811,741.40, 39,759,913.78 and 15,759,255.20 is: 21,747,613.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811,741.40 : 39,759,913.78 = 15,759,255.20 : x
  2. Step 2: Convert to fraction form
    28,811,741.40/39,759,913.78 = 15,759,255.20/x
  3. Step 3: Cross multiply
    28,811,741.40x = 39,759,913.78 × 15,759,255.20
  4. Step 4: Simplify right side
    28,811,741.40x = 626,586,627,989,016.62
  5. Step 5: Solve for x
    x = 626,586,627,989,016.62/28,811,741.40
  6. Step 6: Final answer
    x = 21,747,613.91

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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.