Home / 19,920.30-29,880.45-16,712.70

Finding the Fourth Proportional to 19,920.30, 29,880.45 and 16,712.70

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Solution

The fourth proportional to 19,920.30, 29,880.45 and 16,712.70 is: 25,069.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.30 : 29,880.45 = 16,712.70 : x
  2. Step 2: Convert to fraction form
    19,920.30/29,880.45 = 16,712.70/x
  3. Step 3: Cross multiply
    19,920.30x = 29,880.45 × 16,712.70
  4. Step 4: Simplify right side
    19,920.30x = 499,382,996.72
  5. Step 5: Solve for x
    x = 499,382,996.72/19,920.30
  6. Step 6: Final answer
    x = 25,069.05

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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.