Home / 19,307.07-28,964.85-10,990.98

Finding the Fourth Proportional to 19,307.07, 28,964.85 and 10,990.98

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Solution

The fourth proportional to 19,307.07, 28,964.85 and 10,990.98 is: 16,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,307.07 : 28,964.85 = 10,990.98 : x
  2. Step 2: Convert to fraction form
    19,307.07/28,964.85 = 10,990.98/x
  3. Step 3: Cross multiply
    19,307.07x = 28,964.85 × 10,990.98
  4. Step 4: Simplify right side
    19,307.07x = 318,352,087.05
  5. Step 5: Solve for x
    x = 318,352,087.05/19,307.07
  6. Step 6: Final answer
    x = 16,488.89

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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.