Home / 31,402.51-43,346.85-20,795.56

Finding the Fourth Proportional to 31,402.51, 43,346.85 and 20,795.56

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Solution

The fourth proportional to 31,402.51, 43,346.85 and 20,795.56 is: 28,705.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,402.51 : 43,346.85 = 20,795.56 : x
  2. Step 2: Convert to fraction form
    31,402.51/43,346.85 = 20,795.56/x
  3. Step 3: Cross multiply
    31,402.51x = 43,346.85 × 20,795.56
  4. Step 4: Simplify right side
    31,402.51x = 901,422,019.99
  5. Step 5: Solve for x
    x = 901,422,019.99/31,402.51
  6. Step 6: Final answer
    x = 28,705.41

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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.