Home / 21,291.36-29,382.10-11,600.77

Finding the Fourth Proportional to 21,291.36, 29,382.10 and 11,600.77

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Solution

The fourth proportional to 21,291.36, 29,382.10 and 11,600.77 is: 16,009.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.36 : 29,382.10 = 11,600.77 : x
  2. Step 2: Convert to fraction form
    21,291.36/29,382.10 = 11,600.77/x
  3. Step 3: Cross multiply
    21,291.36x = 29,382.10 × 11,600.77
  4. Step 4: Simplify right side
    21,291.36x = 340,854,866.31
  5. Step 5: Solve for x
    x = 340,854,866.31/21,291.36
  6. Step 6: Final answer
    x = 16,009.07

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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.