Home / 21,728.49-32,561.29-10,622.63

Finding the Fourth Proportional to 21,728.49, 32,561.29 and 10,622.63

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Solution

The fourth proportional to 21,728.49, 32,561.29 and 10,622.63 is: 15,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,728.49 : 32,561.29 = 10,622.63 : x
  2. Step 2: Convert to fraction form
    21,728.49/32,561.29 = 10,622.63/x
  3. Step 3: Cross multiply
    21,728.49x = 32,561.29 × 10,622.63
  4. Step 4: Simplify right side
    21,728.49x = 345,886,447.52
  5. Step 5: Solve for x
    x = 345,886,447.52/21,728.49
  6. Step 6: Final answer
    x = 15,918.57

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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.