Home / 21,000.90-31,481.28-14,775.24

Finding the Fourth Proportional to 21,000.90, 31,481.28 and 14,775.24

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Solution

The fourth proportional to 21,000.90, 31,481.28 and 14,775.24 is: 22,148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.90 : 31,481.28 = 14,775.24 : x
  2. Step 2: Convert to fraction form
    21,000.90/31,481.28 = 14,775.24/x
  3. Step 3: Cross multiply
    21,000.90x = 31,481.28 × 14,775.24
  4. Step 4: Simplify right side
    21,000.90x = 465,143,467.51
  5. Step 5: Solve for x
    x = 465,143,467.51/21,000.90
  6. Step 6: Final answer
    x = 22,148.74

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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.