Home / 30,878.62-46,290.42-11,152.78

Finding the Fourth Proportional to 30,878.62, 46,290.42 and 11,152.78

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Solution

The fourth proportional to 30,878.62, 46,290.42 and 11,152.78 is: 16,719.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,878.62 : 46,290.42 = 11,152.78 : x
  2. Step 2: Convert to fraction form
    30,878.62/46,290.42 = 11,152.78/x
  3. Step 3: Cross multiply
    30,878.62x = 46,290.42 × 11,152.78
  4. Step 4: Simplify right side
    30,878.62x = 516,266,870.37
  5. Step 5: Solve for x
    x = 516,266,870.37/30,878.62
  6. Step 6: Final answer
    x = 16,719.23

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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.