Home / 21,835.66-30,109.37-14,749.78

Finding the Fourth Proportional to 21,835.66, 30,109.37 and 14,749.78

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Solution

The fourth proportional to 21,835.66, 30,109.37 and 14,749.78 is: 20,338.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.66 : 30,109.37 = 14,749.78 : x
  2. Step 2: Convert to fraction form
    21,835.66/30,109.37 = 14,749.78/x
  3. Step 3: Cross multiply
    21,835.66x = 30,109.37 × 14,749.78
  4. Step 4: Simplify right side
    21,835.66x = 444,106,509.69
  5. Step 5: Solve for x
    x = 444,106,509.69/21,835.66
  6. Step 6: Final answer
    x = 20,338.59

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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.