Home / 21,228.45-31,842.56-5,433.45

Finding the Fourth Proportional to 21,228.45, 31,842.56 and 5,433.45

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Solution

The fourth proportional to 21,228.45, 31,842.56 and 5,433.45 is: 8,150.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.45 : 31,842.56 = 5,433.45 : x
  2. Step 2: Convert to fraction form
    21,228.45/31,842.56 = 5,433.45/x
  3. Step 3: Cross multiply
    21,228.45x = 31,842.56 × 5,433.45
  4. Step 4: Simplify right side
    21,228.45x = 173,014,957.63
  5. Step 5: Solve for x
    x = 173,014,957.63/21,228.45
  6. Step 6: Final answer
    x = 8,150.15

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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.