Home / 39,956.15-59,915.07-18,878.64

Finding the Fourth Proportional to 39,956.15, 59,915.07 and 18,878.64

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Solution

The fourth proportional to 39,956.15, 59,915.07 and 18,878.64 is: 28,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,956.15 : 59,915.07 = 18,878.64 : x
  2. Step 2: Convert to fraction form
    39,956.15/59,915.07 = 18,878.64/x
  3. Step 3: Cross multiply
    39,956.15x = 59,915.07 × 18,878.64
  4. Step 4: Simplify right side
    39,956.15x = 1,131,115,037.10
  5. Step 5: Solve for x
    x = 1,131,115,037.10/39,956.15
  6. Step 6: Final answer
    x = 28,308.91

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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.