Home / 19,282.11-28,950.75-10,978.80

Finding the Fourth Proportional to 19,282.11, 28,950.75 and 10,978.80

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Solution

The fourth proportional to 19,282.11, 28,950.75 and 10,978.80 is: 16,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,282.11 : 28,950.75 = 10,978.80 : x
  2. Step 2: Convert to fraction form
    19,282.11/28,950.75 = 10,978.80/x
  3. Step 3: Cross multiply
    19,282.11x = 28,950.75 × 10,978.80
  4. Step 4: Simplify right side
    19,282.11x = 317,844,494.10
  5. Step 5: Solve for x
    x = 317,844,494.10/19,282.11
  6. Step 6: Final answer
    x = 16,483.91

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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.