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Finding the Fourth Proportional to 39,990.80, 60,006.90 and 16,315.70

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Solution

The fourth proportional to 39,990.80, 60,006.90 and 16,315.70 is: 24,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.80 : 60,006.90 = 16,315.70 : x
  2. Step 2: Convert to fraction form
    39,990.80/60,006.90 = 16,315.70/x
  3. Step 3: Cross multiply
    39,990.80x = 60,006.90 × 16,315.70
  4. Step 4: Simplify right side
    39,990.80x = 979,054,578.33
  5. Step 5: Solve for x
    x = 979,054,578.33/39,990.80
  6. Step 6: Final answer
    x = 24,482.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.