Home / 21,288.71-31,936.95-7,248.07

Finding the Fourth Proportional to 21,288.71, 31,936.95 and 7,248.07

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Solution

The fourth proportional to 21,288.71, 31,936.95 and 7,248.07 is: 10,873.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.71 : 31,936.95 = 7,248.07 : x
  2. Step 2: Convert to fraction form
    21,288.71/31,936.95 = 7,248.07/x
  3. Step 3: Cross multiply
    21,288.71x = 31,936.95 × 7,248.07
  4. Step 4: Simplify right side
    21,288.71x = 231,481,289.11
  5. Step 5: Solve for x
    x = 231,481,289.11/21,288.71
  6. Step 6: Final answer
    x = 10,873.43

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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.