Home / 30,934.46-42,687.20-18,188.16

Finding the Fourth Proportional to 30,934.46, 42,687.20 and 18,188.16

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Solution

The fourth proportional to 30,934.46, 42,687.20 and 18,188.16 is: 25,098.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.46 : 42,687.20 = 18,188.16 : x
  2. Step 2: Convert to fraction form
    30,934.46/42,687.20 = 18,188.16/x
  3. Step 3: Cross multiply
    30,934.46x = 42,687.20 × 18,188.16
  4. Step 4: Simplify right side
    30,934.46x = 776,401,532.61
  5. Step 5: Solve for x
    x = 776,401,532.61/30,934.46
  6. Step 6: Final answer
    x = 25,098.28

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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.