Home / 31,330.86-43,235.31-18,748.14

Finding the Fourth Proportional to 31,330.86, 43,235.31 and 18,748.14

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Solution

The fourth proportional to 31,330.86, 43,235.31 and 18,748.14 is: 25,871.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.86 : 43,235.31 = 18,748.14 : x
  2. Step 2: Convert to fraction form
    31,330.86/43,235.31 = 18,748.14/x
  3. Step 3: Cross multiply
    31,330.86x = 43,235.31 × 18,748.14
  4. Step 4: Simplify right side
    31,330.86x = 810,581,644.82
  5. Step 5: Solve for x
    x = 810,581,644.82/31,330.86
  6. Step 6: Final answer
    x = 25,871.67

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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.