Home / 21,720.42-32,573.88-9,240.30

Finding the Fourth Proportional to 21,720.42, 32,573.88 and 9,240.30

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Solution

The fourth proportional to 21,720.42, 32,573.88 and 9,240.30 is: 13,857.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.42 : 32,573.88 = 9,240.30 : x
  2. Step 2: Convert to fraction form
    21,720.42/32,573.88 = 9,240.30/x
  3. Step 3: Cross multiply
    21,720.42x = 32,573.88 × 9,240.30
  4. Step 4: Simplify right side
    21,720.42x = 300,992,423.36
  5. Step 5: Solve for x
    x = 300,992,423.36/21,720.42
  6. Step 6: Final answer
    x = 13,857.58

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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.