Home / 31,718.62-47,563.02-18,395.40

Finding the Fourth Proportional to 31,718.62, 47,563.02 and 18,395.40

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Solution

The fourth proportional to 31,718.62, 47,563.02 and 18,395.40 is: 27,584.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.62 : 47,563.02 = 18,395.40 : x
  2. Step 2: Convert to fraction form
    31,718.62/47,563.02 = 18,395.40/x
  3. Step 3: Cross multiply
    31,718.62x = 47,563.02 × 18,395.40
  4. Step 4: Simplify right side
    31,718.62x = 874,940,778.11
  5. Step 5: Solve for x
    x = 874,940,778.11/31,718.62
  6. Step 6: Final answer
    x = 27,584.45

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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.