Home / 31,621.38-47,431.86-12,901.32

Finding the Fourth Proportional to 31,621.38, 47,431.86 and 12,901.32

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Solution

The fourth proportional to 31,621.38, 47,431.86 and 12,901.32 is: 19,351.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.38 : 47,431.86 = 12,901.32 : x
  2. Step 2: Convert to fraction form
    31,621.38/47,431.86 = 12,901.32/x
  3. Step 3: Cross multiply
    31,621.38x = 47,431.86 × 12,901.32
  4. Step 4: Simplify right side
    31,621.38x = 611,933,604.06
  5. Step 5: Solve for x
    x = 611,933,604.06/31,621.38
  6. Step 6: Final answer
    x = 19,351.89

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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.