Home / 21,127.01-29,155.23-11,695.58

Finding the Fourth Proportional to 21,127.01, 29,155.23 and 11,695.58

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Solution

The fourth proportional to 21,127.01, 29,155.23 and 11,695.58 is: 16,139.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.01 : 29,155.23 = 11,695.58 : x
  2. Step 2: Convert to fraction form
    21,127.01/29,155.23 = 11,695.58/x
  3. Step 3: Cross multiply
    21,127.01x = 29,155.23 × 11,695.58
  4. Step 4: Simplify right side
    21,127.01x = 340,987,179.11
  5. Step 5: Solve for x
    x = 340,987,179.11/21,127.01
  6. Step 6: Final answer
    x = 16,139.87

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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.