Home / 30,440.87-42,008.29-17,012.12

Finding the Fourth Proportional to 30,440.87, 42,008.29 and 17,012.12

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Solution

The fourth proportional to 30,440.87, 42,008.29 and 17,012.12 is: 23,476.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.87 : 42,008.29 = 17,012.12 : x
  2. Step 2: Convert to fraction form
    30,440.87/42,008.29 = 17,012.12/x
  3. Step 3: Cross multiply
    30,440.87x = 42,008.29 × 17,012.12
  4. Step 4: Simplify right side
    30,440.87x = 714,649,817.90
  5. Step 5: Solve for x
    x = 714,649,817.90/30,440.87
  6. Step 6: Final answer
    x = 23,476.66

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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.