Home / 21,084.55-31,616.08-7,039.53

Finding the Fourth Proportional to 21,084.55, 31,616.08 and 7,039.53

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Solution

The fourth proportional to 21,084.55, 31,616.08 and 7,039.53 is: 10,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.55 : 31,616.08 = 7,039.53 : x
  2. Step 2: Convert to fraction form
    21,084.55/31,616.08 = 7,039.53/x
  3. Step 3: Cross multiply
    21,084.55x = 31,616.08 × 7,039.53
  4. Step 4: Simplify right side
    21,084.55x = 222,562,343.64
  5. Step 5: Solve for x
    x = 222,562,343.64/21,084.55
  6. Step 6: Final answer
    x = 10,555.71

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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.