Home / 31,315.21-46,972.27-10,538.71

Finding the Fourth Proportional to 31,315.21, 46,972.27 and 10,538.71

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Solution

The fourth proportional to 31,315.21, 46,972.27 and 10,538.71 is: 15,807.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.21 : 46,972.27 = 10,538.71 : x
  2. Step 2: Convert to fraction form
    31,315.21/46,972.27 = 10,538.71/x
  3. Step 3: Cross multiply
    31,315.21x = 46,972.27 × 10,538.71
  4. Step 4: Simplify right side
    31,315.21x = 495,027,027.31
  5. Step 5: Solve for x
    x = 495,027,027.31/31,315.21
  6. Step 6: Final answer
    x = 15,807.88

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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.