Home / 31,411.85-43,346.07-18,664.47

Finding the Fourth Proportional to 31,411.85, 43,346.07 and 18,664.47

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Solution

The fourth proportional to 31,411.85, 43,346.07 and 18,664.47 is: 25,755.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,411.85 : 43,346.07 = 18,664.47 : x
  2. Step 2: Convert to fraction form
    31,411.85/43,346.07 = 18,664.47/x
  3. Step 3: Cross multiply
    31,411.85x = 43,346.07 × 18,664.47
  4. Step 4: Simplify right side
    31,411.85x = 809,031,423.13
  5. Step 5: Solve for x
    x = 809,031,423.13/31,411.85
  6. Step 6: Final answer
    x = 25,755.62

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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.