Home / 15,724.08-21,702.60-9,010.80

Finding the Fourth Proportional to 15,724.08, 21,702.60 and 9,010.80

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Solution

The fourth proportional to 15,724.08, 21,702.60 and 9,010.80 is: 12,436.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.08 : 21,702.60 = 9,010.80 : x
  2. Step 2: Convert to fraction form
    15,724.08/21,702.60 = 9,010.80/x
  3. Step 3: Cross multiply
    15,724.08x = 21,702.60 × 9,010.80
  4. Step 4: Simplify right side
    15,724.08x = 195,557,788.08
  5. Step 5: Solve for x
    x = 195,557,788.08/15,724.08
  6. Step 6: Final answer
    x = 12,436.83

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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.