Home / 21,367.86-29,486.91-11,807.19

Finding the Fourth Proportional to 21,367.86, 29,486.91 and 11,807.19

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Solution

The fourth proportional to 21,367.86, 29,486.91 and 11,807.19 is: 16,293.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.86 : 29,486.91 = 11,807.19 : x
  2. Step 2: Convert to fraction form
    21,367.86/29,486.91 = 11,807.19/x
  3. Step 3: Cross multiply
    21,367.86x = 29,486.91 × 11,807.19
  4. Step 4: Simplify right side
    21,367.86x = 348,157,548.88
  5. Step 5: Solve for x
    x = 348,157,548.88/21,367.86
  6. Step 6: Final answer
    x = 16,293.52

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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.