Home / 21,201.28-31,816.50-7,350.28

Finding the Fourth Proportional to 21,201.28, 31,816.50 and 7,350.28

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Solution

The fourth proportional to 21,201.28, 31,816.50 and 7,350.28 is: 11,030.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.28 : 31,816.50 = 7,350.28 : x
  2. Step 2: Convert to fraction form
    21,201.28/31,816.50 = 7,350.28/x
  3. Step 3: Cross multiply
    21,201.28x = 31,816.50 × 7,350.28
  4. Step 4: Simplify right side
    21,201.28x = 233,860,250.95
  5. Step 5: Solve for x
    x = 233,860,250.95/21,201.28
  6. Step 6: Final answer
    x = 11,030.48

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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.