Home / 21,095.21-29,110.65-11,534.78

Finding the Fourth Proportional to 21,095.21, 29,110.65 and 11,534.78

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Solution

The fourth proportional to 21,095.21, 29,110.65 and 11,534.78 is: 15,917.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.21 : 29,110.65 = 11,534.78 : x
  2. Step 2: Convert to fraction form
    21,095.21/29,110.65 = 11,534.78/x
  3. Step 3: Cross multiply
    21,095.21x = 29,110.65 × 11,534.78
  4. Step 4: Simplify right side
    21,095.21x = 335,784,943.41
  5. Step 5: Solve for x
    x = 335,784,943.41/21,095.21
  6. Step 6: Final answer
    x = 15,917.59

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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.