Home / 31,705.01-43,749.74-18,955.65

Finding the Fourth Proportional to 31,705.01, 43,749.74 and 18,955.65

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Solution

The fourth proportional to 31,705.01, 43,749.74 and 18,955.65 is: 26,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,705.01 : 43,749.74 = 18,955.65 : x
  2. Step 2: Convert to fraction form
    31,705.01/43,749.74 = 18,955.65/x
  3. Step 3: Cross multiply
    31,705.01x = 43,749.74 × 18,955.65
  4. Step 4: Simplify right side
    31,705.01x = 829,304,811.56
  5. Step 5: Solve for x
    x = 829,304,811.56/31,705.01
  6. Step 6: Final answer
    x = 26,156.90

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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.