Home / 15,438.72-21,287.52-10,827.84

Finding the Fourth Proportional to 15,438.72, 21,287.52 and 10,827.84

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Solution

The fourth proportional to 15,438.72, 21,287.52 and 10,827.84 is: 14,929.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.72 : 21,287.52 = 10,827.84 : x
  2. Step 2: Convert to fraction form
    15,438.72/21,287.52 = 10,827.84/x
  3. Step 3: Cross multiply
    15,438.72x = 21,287.52 × 10,827.84
  4. Step 4: Simplify right side
    15,438.72x = 230,497,860.56
  5. Step 5: Solve for x
    x = 230,497,860.56/15,438.72
  6. Step 6: Final answer
    x = 14,929.86

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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.