Home / 28,086.71-38,759.72-15,339.98

Finding the Fourth Proportional to 28,086.71, 38,759.72 and 15,339.98

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Solution

The fourth proportional to 28,086.71, 38,759.72 and 15,339.98 is: 21,169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.71 : 38,759.72 = 15,339.98 : x
  2. Step 2: Convert to fraction form
    28,086.71/38,759.72 = 15,339.98/x
  3. Step 3: Cross multiply
    28,086.71x = 38,759.72 × 15,339.98
  4. Step 4: Simplify right side
    28,086.71x = 594,573,349.80
  5. Step 5: Solve for x
    x = 594,573,349.80/28,086.71
  6. Step 6: Final answer
    x = 21,169.21

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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.