Home / 21,188.31-29,227.34-13,632.22

Finding the Fourth Proportional to 21,188.31, 29,227.34 and 13,632.22

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Solution

The fourth proportional to 21,188.31, 29,227.34 and 13,632.22 is: 18,804.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.31 : 29,227.34 = 13,632.22 : x
  2. Step 2: Convert to fraction form
    21,188.31/29,227.34 = 13,632.22/x
  3. Step 3: Cross multiply
    21,188.31x = 29,227.34 × 13,632.22
  4. Step 4: Simplify right side
    21,188.31x = 398,433,599.51
  5. Step 5: Solve for x
    x = 398,433,599.51/21,188.31
  6. Step 6: Final answer
    x = 18,804.41

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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.