Home / 21,292.40-29,382.72-11,860.76

Finding the Fourth Proportional to 21,292.40, 29,382.72 and 11,860.76

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Solution

The fourth proportional to 21,292.40, 29,382.72 and 11,860.76 is: 16,367.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.40 : 29,382.72 = 11,860.76 : x
  2. Step 2: Convert to fraction form
    21,292.40/29,382.72 = 11,860.76/x
  3. Step 3: Cross multiply
    21,292.40x = 29,382.72 × 11,860.76
  4. Step 4: Simplify right side
    21,292.40x = 348,501,390.07
  5. Step 5: Solve for x
    x = 348,501,390.07/21,292.40
  6. Step 6: Final answer
    x = 16,367.41

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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.