Home / 21,354.24-32,031.36-7,500

Finding the Fourth Proportional to 21,354.24, 32,031.36 and 7,500

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Solution

The fourth proportional to 21,354.24, 32,031.36 and 7,500 is: 11,250

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.24 : 32,031.36 = 7,500 : x
  2. Step 2: Convert to fraction form
    21,354.24/32,031.36 = 7,500/x
  3. Step 3: Cross multiply
    21,354.24x = 32,031.36 × 7,500
  4. Step 4: Simplify right side
    21,354.24x = 240,235,200
  5. Step 5: Solve for x
    x = 240,235,200/21,354.24
  6. Step 6: Final answer
    x = 11,250

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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.