Home / 31,311.50-43,208.24-18,579.00

Finding the Fourth Proportional to 31,311.50, 43,208.24 and 18,579.00

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Solution

The fourth proportional to 31,311.50, 43,208.24 and 18,579.00 is: 25,638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,311.50 : 43,208.24 = 18,579.00 : x
  2. Step 2: Convert to fraction form
    31,311.50/43,208.24 = 18,579.00/x
  3. Step 3: Cross multiply
    31,311.50x = 43,208.24 × 18,579.00
  4. Step 4: Simplify right side
    31,311.50x = 802,765,960.10
  5. Step 5: Solve for x
    x = 802,765,960.10/31,311.50
  6. Step 6: Final answer
    x = 25,638.06

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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.