Home / 28,575.32-39,434.04-15,828.86

Finding the Fourth Proportional to 28,575.32, 39,434.04 and 15,828.86

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Solution

The fourth proportional to 28,575.32, 39,434.04 and 15,828.86 is: 21,843.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.32 : 39,434.04 = 15,828.86 : x
  2. Step 2: Convert to fraction form
    28,575.32/39,434.04 = 15,828.86/x
  3. Step 3: Cross multiply
    28,575.32x = 39,434.04 × 15,828.86
  4. Step 4: Simplify right side
    28,575.32x = 624,195,898.39
  5. Step 5: Solve for x
    x = 624,195,898.39/28,575.32
  6. Step 6: Final answer
    x = 21,843.88

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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.