Home / 21,283.75-31,931.70-7,246.86

Finding the Fourth Proportional to 21,283.75, 31,931.70 and 7,246.86

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Solution

The fourth proportional to 21,283.75, 31,931.70 and 7,246.86 is: 10,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.75 : 31,931.70 = 7,246.86 : x
  2. Step 2: Convert to fraction form
    21,283.75/31,931.70 = 7,246.86/x
  3. Step 3: Cross multiply
    21,283.75x = 31,931.70 × 7,246.86
  4. Step 4: Simplify right side
    21,283.75x = 231,404,559.46
  5. Step 5: Solve for x
    x = 231,404,559.46/21,283.75
  6. Step 6: Final answer
    x = 10,872.36

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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.