Home / 21,585.88-32,382.06-9,900.28

Finding the Fourth Proportional to 21,585.88, 32,382.06 and 9,900.28

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Solution

The fourth proportional to 21,585.88, 32,382.06 and 9,900.28 is: 14,851.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.88 : 32,382.06 = 9,900.28 : x
  2. Step 2: Convert to fraction form
    21,585.88/32,382.06 = 9,900.28/x
  3. Step 3: Cross multiply
    21,585.88x = 32,382.06 × 9,900.28
  4. Step 4: Simplify right side
    21,585.88x = 320,591,460.98
  5. Step 5: Solve for x
    x = 320,591,460.98/21,585.88
  6. Step 6: Final answer
    x = 14,851.91

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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.