Home / 30,440.96-42,008.40-17,012.21

Finding the Fourth Proportional to 30,440.96, 42,008.40 and 17,012.21

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Solution

The fourth proportional to 30,440.96, 42,008.40 and 17,012.21 is: 23,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.96 : 42,008.40 = 17,012.21 : x
  2. Step 2: Convert to fraction form
    30,440.96/42,008.40 = 17,012.21/x
  3. Step 3: Cross multiply
    30,440.96x = 42,008.40 × 17,012.21
  4. Step 4: Simplify right side
    30,440.96x = 714,655,722.56
  5. Step 5: Solve for x
    x = 714,655,722.56/30,440.96
  6. Step 6: Final answer
    x = 23,476.78

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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.