Home / 31,630.64-47,439.32-11,908.72

Finding the Fourth Proportional to 31,630.64, 47,439.32 and 11,908.72

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Solution

The fourth proportional to 31,630.64, 47,439.32 and 11,908.72 is: 17,860.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,630.64 : 47,439.32 = 11,908.72 : x
  2. Step 2: Convert to fraction form
    31,630.64/47,439.32 = 11,908.72/x
  3. Step 3: Cross multiply
    31,630.64x = 47,439.32 × 11,908.72
  4. Step 4: Simplify right side
    31,630.64x = 564,941,578.87
  5. Step 5: Solve for x
    x = 564,941,578.87/31,630.64
  6. Step 6: Final answer
    x = 17,860.58

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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.