Home / 30,738.08-42,417.41-17,125.80

Finding the Fourth Proportional to 30,738.08, 42,417.41 and 17,125.80

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Solution

The fourth proportional to 30,738.08, 42,417.41 and 17,125.80 is: 23,632.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,738.08 : 42,417.41 = 17,125.80 : x
  2. Step 2: Convert to fraction form
    30,738.08/42,417.41 = 17,125.80/x
  3. Step 3: Cross multiply
    30,738.08x = 42,417.41 × 17,125.80
  4. Step 4: Simplify right side
    30,738.08x = 726,432,080.18
  5. Step 5: Solve for x
    x = 726,432,080.18/30,738.08
  6. Step 6: Final answer
    x = 23,632.97

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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.