Home / 21,077.28-29,092.52-12,127.67

Finding the Fourth Proportional to 21,077.28, 29,092.52 and 12,127.67

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Solution

The fourth proportional to 21,077.28, 29,092.52 and 12,127.67 is: 16,739.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.28 : 29,092.52 = 12,127.67 : x
  2. Step 2: Convert to fraction form
    21,077.28/29,092.52 = 12,127.67/x
  3. Step 3: Cross multiply
    21,077.28x = 29,092.52 × 12,127.67
  4. Step 4: Simplify right side
    21,077.28x = 352,824,385.02
  5. Step 5: Solve for x
    x = 352,824,385.02/21,077.28
  6. Step 6: Final answer
    x = 16,739.56

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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.