Home / 21,134.80-29,166.35-11,574.51

Finding the Fourth Proportional to 21,134.80, 29,166.35 and 11,574.51

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Solution

The fourth proportional to 21,134.80, 29,166.35 and 11,574.51 is: 15,973.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.80 : 29,166.35 = 11,574.51 : x
  2. Step 2: Convert to fraction form
    21,134.80/29,166.35 = 11,574.51/x
  3. Step 3: Cross multiply
    21,134.80x = 29,166.35 × 11,574.51
  4. Step 4: Simplify right side
    21,134.80x = 337,586,151.87
  5. Step 5: Solve for x
    x = 337,586,151.87/21,134.80
  6. Step 6: Final answer
    x = 15,973.00

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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.