Home / 30,439.88-42,006.20-17,010.81

Finding the Fourth Proportional to 30,439.88, 42,006.20 and 17,010.81

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Solution

The fourth proportional to 30,439.88, 42,006.20 and 17,010.81 is: 23,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.88 : 42,006.20 = 17,010.81 : x
  2. Step 2: Convert to fraction form
    30,439.88/42,006.20 = 17,010.81/x
  3. Step 3: Cross multiply
    30,439.88x = 42,006.20 × 17,010.81
  4. Step 4: Simplify right side
    30,439.88x = 714,559,401.97
  5. Step 5: Solve for x
    x = 714,559,401.97/30,439.88
  6. Step 6: Final answer
    x = 23,474.45

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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.