Home / 30,775.88-42,463.86-18,838.28

Finding the Fourth Proportional to 30,775.88, 42,463.86 and 18,838.28

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Solution

The fourth proportional to 30,775.88, 42,463.86 and 18,838.28 is: 25,992.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,775.88 : 42,463.86 = 18,838.28 : x
  2. Step 2: Convert to fraction form
    30,775.88/42,463.86 = 18,838.28/x
  3. Step 3: Cross multiply
    30,775.88x = 42,463.86 × 18,838.28
  4. Step 4: Simplify right side
    30,775.88x = 799,946,084.56
  5. Step 5: Solve for x
    x = 799,946,084.56/30,775.88
  6. Step 6: Final answer
    x = 25,992.63

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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.