Home / 21,669.84-29,898.36-13,715.46

Finding the Fourth Proportional to 21,669.84, 29,898.36 and 13,715.46

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Solution

The fourth proportional to 21,669.84, 29,898.36 and 13,715.46 is: 18,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.84 : 29,898.36 = 13,715.46 : x
  2. Step 2: Convert to fraction form
    21,669.84/29,898.36 = 13,715.46/x
  3. Step 3: Cross multiply
    21,669.84x = 29,898.36 × 13,715.46
  4. Step 4: Simplify right side
    21,669.84x = 410,069,760.65
  5. Step 5: Solve for x
    x = 410,069,760.65/21,669.84
  6. Step 6: Final answer
    x = 18,923.53

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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.