Home / 21,559.52-29,749.76-12,127.92

Finding the Fourth Proportional to 21,559.52, 29,749.76 and 12,127.92

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Solution

The fourth proportional to 21,559.52, 29,749.76 and 12,127.92 is: 16,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.52 : 29,749.76 = 12,127.92 : x
  2. Step 2: Convert to fraction form
    21,559.52/29,749.76 = 12,127.92/x
  3. Step 3: Cross multiply
    21,559.52x = 29,749.76 × 12,127.92
  4. Step 4: Simplify right side
    21,559.52x = 360,802,709.30
  5. Step 5: Solve for x
    x = 360,802,709.30/21,559.52
  6. Step 6: Final answer
    x = 16,735.19

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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.