Home / 21,892.75-30,182.12-15,500.23

Finding the Fourth Proportional to 21,892.75, 30,182.12 and 15,500.23

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Solution

The fourth proportional to 21,892.75, 30,182.12 and 15,500.23 is: 21,369.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,892.75 : 30,182.12 = 15,500.23 : x
  2. Step 2: Convert to fraction form
    21,892.75/30,182.12 = 15,500.23/x
  3. Step 3: Cross multiply
    21,892.75x = 30,182.12 × 15,500.23
  4. Step 4: Simplify right side
    21,892.75x = 467,829,707.06
  5. Step 5: Solve for x
    x = 467,829,707.06/21,892.75
  6. Step 6: Final answer
    x = 21,369.16

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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.