Home / 21,410.35-32,112.69-9,720.88

Finding the Fourth Proportional to 21,410.35, 32,112.69 and 9,720.88

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Solution

The fourth proportional to 21,410.35, 32,112.69 and 9,720.88 is: 14,580.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,410.35 : 32,112.69 = 9,720.88 : x
  2. Step 2: Convert to fraction form
    21,410.35/32,112.69 = 9,720.88/x
  3. Step 3: Cross multiply
    21,410.35x = 32,112.69 × 9,720.88
  4. Step 4: Simplify right side
    21,410.35x = 312,163,605.97
  5. Step 5: Solve for x
    x = 312,163,605.97/21,410.35
  6. Step 6: Final answer
    x = 14,580.03

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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.