Home / 21,054.09-31,580.72-7,015.14

Finding the Fourth Proportional to 21,054.09, 31,580.72 and 7,015.14

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Solution

The fourth proportional to 21,054.09, 31,580.72 and 7,015.14 is: 10,522.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.09 : 31,580.72 = 7,015.14 : x
  2. Step 2: Convert to fraction form
    21,054.09/31,580.72 = 7,015.14/x
  3. Step 3: Cross multiply
    21,054.09x = 31,580.72 × 7,015.14
  4. Step 4: Simplify right side
    21,054.09x = 221,543,137.03
  5. Step 5: Solve for x
    x = 221,543,137.03/21,054.09
  6. Step 6: Final answer
    x = 10,522.57

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.