Home / 31,154.58-46,713.91-21,305.79

Finding the Fourth Proportional to 31,154.58, 46,713.91 and 21,305.79

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Solution

The fourth proportional to 31,154.58, 46,713.91 and 21,305.79 is: 31,946.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,154.58 : 46,713.91 = 21,305.79 : x
  2. Step 2: Convert to fraction form
    31,154.58/46,713.91 = 21,305.79/x
  3. Step 3: Cross multiply
    31,154.58x = 46,713.91 × 21,305.79
  4. Step 4: Simplify right side
    31,154.58x = 995,276,756.54
  5. Step 5: Solve for x
    x = 995,276,756.54/31,154.58
  6. Step 6: Final answer
    x = 31,946.40

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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.