Home / 30,939.95-42,697.17-16,792.79

Finding the Fourth Proportional to 30,939.95, 42,697.17 and 16,792.79

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Solution

The fourth proportional to 30,939.95, 42,697.17 and 16,792.79 is: 23,174.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.95 : 42,697.17 = 16,792.79 : x
  2. Step 2: Convert to fraction form
    30,939.95/42,697.17 = 16,792.79/x
  3. Step 3: Cross multiply
    30,939.95x = 42,697.17 × 16,792.79
  4. Step 4: Simplify right side
    30,939.95x = 717,004,609.40
  5. Step 5: Solve for x
    x = 717,004,609.40/30,939.95
  6. Step 6: Final answer
    x = 23,174.07

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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.