Home / 19,487.12-29,238.78-10,721.30

Finding the Fourth Proportional to 19,487.12, 29,238.78 and 10,721.30

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Solution

The fourth proportional to 19,487.12, 29,238.78 and 10,721.30 is: 16,086.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.12 : 29,238.78 = 10,721.30 : x
  2. Step 2: Convert to fraction form
    19,487.12/29,238.78 = 10,721.30/x
  3. Step 3: Cross multiply
    19,487.12x = 29,238.78 × 10,721.30
  4. Step 4: Simplify right side
    19,487.12x = 313,477,732.01
  5. Step 5: Solve for x
    x = 313,477,732.01/19,487.12
  6. Step 6: Final answer
    x = 16,086.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.