Home / 31,313.52-43,214.04-18,738

Finding the Fourth Proportional to 31,313.52, 43,214.04 and 18,738

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Solution

The fourth proportional to 31,313.52, 43,214.04 and 18,738 is: 25,859.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,313.52 : 43,214.04 = 18,738 : x
  2. Step 2: Convert to fraction form
    31,313.52/43,214.04 = 18,738/x
  3. Step 3: Cross multiply
    31,313.52x = 43,214.04 × 18,738
  4. Step 4: Simplify right side
    31,313.52x = 809,744,681.52
  5. Step 5: Solve for x
    x = 809,744,681.52/31,313.52
  6. Step 6: Final answer
    x = 25,859.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.