Home / 30,718.43-42,391.50-17,289.87

Finding the Fourth Proportional to 30,718.43, 42,391.50 and 17,289.87

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Solution

The fourth proportional to 30,718.43, 42,391.50 and 17,289.87 is: 23,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.43 : 42,391.50 = 17,289.87 : x
  2. Step 2: Convert to fraction form
    30,718.43/42,391.50 = 17,289.87/x
  3. Step 3: Cross multiply
    30,718.43x = 42,391.50 × 17,289.87
  4. Step 4: Simplify right side
    30,718.43x = 732,943,524.11
  5. Step 5: Solve for x
    x = 732,943,524.11/30,718.43
  6. Step 6: Final answer
    x = 23,860.06

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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.