Home / 21,679.40-32,533.88-9,992.72

Finding the Fourth Proportional to 21,679.40, 32,533.88 and 9,992.72

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Solution

The fourth proportional to 21,679.40, 32,533.88 and 9,992.72 is: 14,995.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.40 : 32,533.88 = 9,992.72 : x
  2. Step 2: Convert to fraction form
    21,679.40/32,533.88 = 9,992.72/x
  3. Step 3: Cross multiply
    21,679.40x = 32,533.88 × 9,992.72
  4. Step 4: Simplify right side
    21,679.40x = 325,101,740.72
  5. Step 5: Solve for x
    x = 325,101,740.72/21,679.40
  6. Step 6: Final answer
    x = 14,995.89

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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.