Home / 23,215.57-32,039.47-13,145.78

Finding the Fourth Proportional to 23,215.57, 32,039.47 and 13,145.78

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Solution

The fourth proportional to 23,215.57, 32,039.47 and 13,145.78 is: 18,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,215.57 : 32,039.47 = 13,145.78 : x
  2. Step 2: Convert to fraction form
    23,215.57/32,039.47 = 13,145.78/x
  3. Step 3: Cross multiply
    23,215.57x = 32,039.47 × 13,145.78
  4. Step 4: Simplify right side
    23,215.57x = 421,183,846.52
  5. Step 5: Solve for x
    x = 421,183,846.52/23,215.57
  6. Step 6: Final answer
    x = 18,142.30

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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.