Home / 21,240.28-31,848.12-7,195.60

Finding the Fourth Proportional to 21,240.28, 31,848.12 and 7,195.60

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Solution

The fourth proportional to 21,240.28, 31,848.12 and 7,195.60 is: 10,789.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.28 : 31,848.12 = 7,195.60 : x
  2. Step 2: Convert to fraction form
    21,240.28/31,848.12 = 7,195.60/x
  3. Step 3: Cross multiply
    21,240.28x = 31,848.12 × 7,195.60
  4. Step 4: Simplify right side
    21,240.28x = 229,166,332.27
  5. Step 5: Solve for x
    x = 229,166,332.27/21,240.28
  6. Step 6: Final answer
    x = 10,789.23

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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.