Home / 30,521.40-42,118.54-16,908.88

Finding the Fourth Proportional to 30,521.40, 42,118.54 and 16,908.88

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Solution

The fourth proportional to 30,521.40, 42,118.54 and 16,908.88 is: 23,333.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,521.40 : 42,118.54 = 16,908.88 : x
  2. Step 2: Convert to fraction form
    30,521.40/42,118.54 = 16,908.88/x
  3. Step 3: Cross multiply
    30,521.40x = 42,118.54 × 16,908.88
  4. Step 4: Simplify right side
    30,521.40x = 712,177,403.74
  5. Step 5: Solve for x
    x = 712,177,403.74/30,521.40
  6. Step 6: Final answer
    x = 23,333.71

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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.