Home / 21,060.47-29,062.29-13,102.63

Finding the Fourth Proportional to 21,060.47, 29,062.29 and 13,102.63

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Solution

The fourth proportional to 21,060.47, 29,062.29 and 13,102.63 is: 18,080.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.47 : 29,062.29 = 13,102.63 : x
  2. Step 2: Convert to fraction form
    21,060.47/29,062.29 = 13,102.63/x
  3. Step 3: Cross multiply
    21,060.47x = 29,062.29 × 13,102.63
  4. Step 4: Simplify right side
    21,060.47x = 380,792,409.30
  5. Step 5: Solve for x
    x = 380,792,409.30/21,060.47
  6. Step 6: Final answer
    x = 18,080.91

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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.