Home / 21,276.36-29,362.66-12,326.68

Finding the Fourth Proportional to 21,276.36, 29,362.66 and 12,326.68

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Solution

The fourth proportional to 21,276.36, 29,362.66 and 12,326.68 is: 17,011.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.36 : 29,362.66 = 12,326.68 : x
  2. Step 2: Convert to fraction form
    21,276.36/29,362.66 = 12,326.68/x
  3. Step 3: Cross multiply
    21,276.36x = 29,362.66 × 12,326.68
  4. Step 4: Simplify right side
    21,276.36x = 361,944,113.77
  5. Step 5: Solve for x
    x = 361,944,113.77/21,276.36
  6. Step 6: Final answer
    x = 17,011.56

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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.