Home / 25,730.86-38,561.37-10,921.21

Finding the Fourth Proportional to 25,730.86, 38,561.37 and 10,921.21

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Solution

The fourth proportional to 25,730.86, 38,561.37 and 10,921.21 is: 16,366.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,730.86 : 38,561.37 = 10,921.21 : x
  2. Step 2: Convert to fraction form
    25,730.86/38,561.37 = 10,921.21/x
  3. Step 3: Cross multiply
    25,730.86x = 38,561.37 × 10,921.21
  4. Step 4: Simplify right side
    25,730.86x = 421,136,819.66
  5. Step 5: Solve for x
    x = 421,136,819.66/25,730.86
  6. Step 6: Final answer
    x = 16,366.99

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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.