Home / 21,301.21-29,376.57-13,344.31

Finding the Fourth Proportional to 21,301.21, 29,376.57 and 13,344.31

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Solution

The fourth proportional to 21,301.21, 29,376.57 and 13,344.31 is: 18,403.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.21 : 29,376.57 = 13,344.31 : x
  2. Step 2: Convert to fraction form
    21,301.21/29,376.57 = 13,344.31/x
  3. Step 3: Cross multiply
    21,301.21x = 29,376.57 × 13,344.31
  4. Step 4: Simplify right side
    21,301.21x = 392,010,056.82
  5. Step 5: Solve for x
    x = 392,010,056.82/21,301.21
  6. Step 6: Final answer
    x = 18,403.18

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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.