Home / 30,809.32-42,516.82-17,380.56

Finding the Fourth Proportional to 30,809.32, 42,516.82 and 17,380.56

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Solution

The fourth proportional to 30,809.32, 42,516.82 and 17,380.56 is: 23,985.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.32 : 42,516.82 = 17,380.56 : x
  2. Step 2: Convert to fraction form
    30,809.32/42,516.82 = 17,380.56/x
  3. Step 3: Cross multiply
    30,809.32x = 42,516.82 × 17,380.56
  4. Step 4: Simplify right side
    30,809.32x = 738,966,141.02
  5. Step 5: Solve for x
    x = 738,966,141.02/30,809.32
  6. Step 6: Final answer
    x = 23,985.15

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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.