Home / 39,120.48-53,915.76-28,493.28

Finding the Fourth Proportional to 39,120.48, 53,915.76 and 28,493.28

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Solution

The fourth proportional to 39,120.48, 53,915.76 and 28,493.28 is: 39,269.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,120.48 : 53,915.76 = 28,493.28 : x
  2. Step 2: Convert to fraction form
    39,120.48/53,915.76 = 28,493.28/x
  3. Step 3: Cross multiply
    39,120.48x = 53,915.76 × 28,493.28
  4. Step 4: Simplify right side
    39,120.48x = 1,536,236,846.09
  5. Step 5: Solve for x
    x = 1,536,236,846.09/39,120.48
  6. Step 6: Final answer
    x = 39,269.38

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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.