Home / 31,201.04-43,043.72-18,618.50

Finding the Fourth Proportional to 31,201.04, 43,043.72 and 18,618.50

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Solution

The fourth proportional to 31,201.04, 43,043.72 and 18,618.50 is: 25,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,201.04 : 43,043.72 = 18,618.50 : x
  2. Step 2: Convert to fraction form
    31,201.04/43,043.72 = 18,618.50/x
  3. Step 3: Cross multiply
    31,201.04x = 43,043.72 × 18,618.50
  4. Step 4: Simplify right side
    31,201.04x = 801,409,500.82
  5. Step 5: Solve for x
    x = 801,409,500.82/31,201.04
  6. Step 6: Final answer
    x = 25,685.35

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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.