Home / 28,576.31-39,436.79-15,830.89

Finding the Fourth Proportional to 28,576.31, 39,436.79 and 15,830.89

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Solution

The fourth proportional to 28,576.31, 39,436.79 and 15,830.89 is: 21,847.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,576.31 : 39,436.79 = 15,830.89 : x
  2. Step 2: Convert to fraction form
    28,576.31/39,436.79 = 15,830.89/x
  3. Step 3: Cross multiply
    28,576.31x = 39,436.79 × 15,830.89
  4. Step 4: Simplify right side
    28,576.31x = 624,319,306.70
  5. Step 5: Solve for x
    x = 624,319,306.70/28,576.31
  6. Step 6: Final answer
    x = 21,847.45

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Half scale
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Double scale
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Similar ratio
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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.