Home / 21,368.22-29,487.56-11,808.81

Finding the Fourth Proportional to 21,368.22, 29,487.56 and 11,808.81

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Solution

The fourth proportional to 21,368.22, 29,487.56 and 11,808.81 is: 16,295.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.22 : 29,487.56 = 11,808.81 : x
  2. Step 2: Convert to fraction form
    21,368.22/29,487.56 = 11,808.81/x
  3. Step 3: Cross multiply
    21,368.22x = 29,487.56 × 11,808.81
  4. Step 4: Simplify right side
    21,368.22x = 348,212,934.36
  5. Step 5: Solve for x
    x = 348,212,934.36/21,368.22
  6. Step 6: Final answer
    x = 16,295.83

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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.