Home / 15,724.32-21,699.62-8,554.23

Finding the Fourth Proportional to 15,724.32, 21,699.62 and 8,554.23

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Solution

The fourth proportional to 15,724.32, 21,699.62 and 8,554.23 is: 11,804.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.32 : 21,699.62 = 8,554.23 : x
  2. Step 2: Convert to fraction form
    15,724.32/21,699.62 = 8,554.23/x
  3. Step 3: Cross multiply
    15,724.32x = 21,699.62 × 8,554.23
  4. Step 4: Simplify right side
    15,724.32x = 185,623,497.62
  5. Step 5: Solve for x
    x = 185,623,497.62/15,724.32
  6. Step 6: Final answer
    x = 11,804.87

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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.