Home / 28,063.59-38,702.46-21,680.58

Finding the Fourth Proportional to 28,063.59, 38,702.46 and 21,680.58

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Solution

The fourth proportional to 28,063.59, 38,702.46 and 21,680.58 is: 29,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.59 : 38,702.46 = 21,680.58 : x
  2. Step 2: Convert to fraction form
    28,063.59/38,702.46 = 21,680.58/x
  3. Step 3: Cross multiply
    28,063.59x = 38,702.46 × 21,680.58
  4. Step 4: Simplify right side
    28,063.59x = 839,091,780.23
  5. Step 5: Solve for x
    x = 839,091,780.23/28,063.59
  6. Step 6: Final answer
    x = 29,899.66

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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.