Home / 19,230.85-28,855.50-10,465.78

Finding the Fourth Proportional to 19,230.85, 28,855.50 and 10,465.78

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Solution

The fourth proportional to 19,230.85, 28,855.50 and 10,465.78 is: 15,703.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.85 : 28,855.50 = 10,465.78 : x
  2. Step 2: Convert to fraction form
    19,230.85/28,855.50 = 10,465.78/x
  3. Step 3: Cross multiply
    19,230.85x = 28,855.50 × 10,465.78
  4. Step 4: Simplify right side
    19,230.85x = 301,995,314.79
  5. Step 5: Solve for x
    x = 301,995,314.79/19,230.85
  6. Step 6: Final answer
    x = 15,703.69

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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.