Home / 31,749.93-43,800.78-20,417.34

Finding the Fourth Proportional to 31,749.93, 43,800.78 and 20,417.34

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Solution

The fourth proportional to 31,749.93, 43,800.78 and 20,417.34 is: 28,166.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,749.93 : 43,800.78 = 20,417.34 : x
  2. Step 2: Convert to fraction form
    31,749.93/43,800.78 = 20,417.34/x
  3. Step 3: Cross multiply
    31,749.93x = 43,800.78 × 20,417.34
  4. Step 4: Simplify right side
    31,749.93x = 894,295,417.53
  5. Step 5: Solve for x
    x = 894,295,417.53/31,749.93
  6. Step 6: Final answer
    x = 28,166.85

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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.