Home / 21,435.31-29,580.67-11,875.22

Finding the Fourth Proportional to 21,435.31, 29,580.67 and 11,875.22

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Solution

The fourth proportional to 21,435.31, 29,580.67 and 11,875.22 is: 16,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.31 : 29,580.67 = 11,875.22 : x
  2. Step 2: Convert to fraction form
    21,435.31/29,580.67 = 11,875.22/x
  3. Step 3: Cross multiply
    21,435.31x = 29,580.67 × 11,875.22
  4. Step 4: Simplify right side
    21,435.31x = 351,276,816.09
  5. Step 5: Solve for x
    x = 351,276,816.09/21,435.31
  6. Step 6: Final answer
    x = 16,387.76

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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.