Home / 30,816.88-42,527.30-17,390.98

Finding the Fourth Proportional to 30,816.88, 42,527.30 and 17,390.98

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Solution

The fourth proportional to 30,816.88, 42,527.30 and 17,390.98 is: 23,999.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,816.88 : 42,527.30 = 17,390.98 : x
  2. Step 2: Convert to fraction form
    30,816.88/42,527.30 = 17,390.98/x
  3. Step 3: Cross multiply
    30,816.88x = 42,527.30 × 17,390.98
  4. Step 4: Simplify right side
    30,816.88x = 739,591,423.75
  5. Step 5: Solve for x
    x = 739,591,423.75/30,816.88
  6. Step 6: Final answer
    x = 23,999.56

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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.