Home / 21,077.31-29,100.24-13,526.89

Finding the Fourth Proportional to 21,077.31, 29,100.24 and 13,526.89

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Solution

The fourth proportional to 21,077.31, 29,100.24 and 13,526.89 is: 18,675.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.31 : 29,100.24 = 13,526.89 : x
  2. Step 2: Convert to fraction form
    21,077.31/29,100.24 = 13,526.89/x
  3. Step 3: Cross multiply
    21,077.31x = 29,100.24 × 13,526.89
  4. Step 4: Simplify right side
    21,077.31x = 393,635,868.93
  5. Step 5: Solve for x
    x = 393,635,868.93/21,077.31
  6. Step 6: Final answer
    x = 18,675.81

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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.